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 | 0 |
1 | 99 |
2 | 39600 |
3 | 15760899 |
4 | 6272798400 |
5 | 2496558002499 |
6 | 993623812196400 |
7 | 395459780696164899 |
8 | 157391999093261433600 |
9 | 62641620179337354408099 |
10 | 24931207439377173792990000 |
11 | 9922557919251935832255612099 |