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 | 0 |
2 | 2 |
3 | 9 |
4 | 72 |
5 | 735 |
6 | 9300 |
7 | 140511 |
8 | 2469600 |
9 | 49509711 |
10 | 1115030220 |
11 | 27871094823 |
12 | 765622756800 |
13 | 22925878253031 |
14 | 743201185847484 |
15 | 25930679953675815 |
16 | 968847417413563200 |
17 | 38593990513290611967 |
18 | 1632776110278839747532 |
19 | 73111823927074777887111 |