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.
n | a(n) |
---|---|
1 | 1 |
2 | 3674160 |
3 | 88580102706155225088000 |
4 | 326318176648849198250599213408124182588293120000000000 |
5 | 25658098810418462614156980952771358874191154069919957663814291417013979423841452032000000000000000000 |