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 | 0 |
2 | 1 |
3 | 70 |
4 | 19320 |
5 | 11052720 |
6 | 11408720400 |
7 | 19285018552800 |
8 | 49792044478176000 |
9 | 186348919238786304000 |
10 | 970566620767088881536000 |
11 | 6808941648018137282054400000 |
12 | 62642603299257346706851910400000 |