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) |
---|---|
0 | 1 |
1 | 40320 |
2 | 18598035456000 |
3 | 474009962689446543360000 |
4 | 170149872975531014630262649651200000 |
5 | 442695618409212548301531680485487369256960000000 |
6 | 5620045472937667963281036681944526735620775198955929600000000 |