Generate Weird Number Sequence
Create a list of weird numbers. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate Weird Number Sequence
- 1. Set how many terms. Choose how many weird numbers to generate. A weird number is abundant (its proper divisors sum to more than itself) but not semiperfect, meaning no subset of divisors sums to the number exactly.
- 2. Pick a separator. Choose commas, spaces, or newlines to join the terms, matching whether the result is going into a sentence, a spreadsheet, or a code array.
- 3. Generate and copy. The output pane fills with the sequence starting at 70, the smallest weird number. Copy it for a number theory note or to seed a divisor-sum experiment.
When to use Generate Weird Number Sequence
Generate Weird Number Sequence lists integers that are abundant but not semiperfect, a rare classification since most abundant numbers can express themselves as a subset sum of their own divisors. Use it to get a checked list rather than testing subset sums by hand.
- Verifying a divisor-subset-sum checker. You wrote a program that tests whether a number's divisors have a subset summing to the number itself, and want confirmed weird numbers like 70 and 836 to validate the negative case.
- Explaining abundant versus perfect numbers. A number theory lesson comparing perfect, abundant, deficient, and semiperfect numbers benefits from a concrete weird-number example, since 70 as the smallest case makes the distinction concrete for students.
- Answering a trivia or puzzle question. A math trivia question asks for the second or third weird number, and generating the sequence is faster than computing divisor sums and subset combinations by hand for each candidate.
- Feeding an OEIS cross-reference. You are studying OEIS sequence A006037 for weird numbers and want to generate more terms than are shown in a textbook excerpt to look for gaps between consecutive terms.
Examples
The first five weird numbers
Output
70, 836, 4030, 5830, 7192
About the Generate Weird Number Sequence tool
Generate Weird Number Sequence is a free online tool that works entirely inside your web browser. Create a list of weird numbers. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 234 Math utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 2 settings, including How many terms and Separator, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Generate Weird Number Sequence cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.