cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A139233 Second differences of perfect numbers A000396, divided by 2.

Table of values

n a(n)
1 223
2 3582
3 16767288
4 4261388256
5 60146251776
6 1152921370926219264
7 1329227995784915870021503368556314624
8 95780971304118050988940697472320075563727548890218496

List of values

[223, 3582, 16767288, 4261388256, 60146251776, 1152921370926219264, 1329227995784915870021503368556314624, 95780971304118050988940697472320075563727548890218496]