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 | 2 |
1 | 2 |
2 | 4 |
3 | 84 |
4 | 48048 |
5 | 1402298040 |
6 | 3343286067469920 |
7 | 950147368528779758457120 |
8 | 44162749985403900797695349661715200 |
9 | 440762756830149092247907829817237094171949712000 |