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 | 2 |
2 | 21 |
3 | 540 |
4 | 25740 |
5 | 1965600 |
6 | 219769200 |
7 | 33844456800 |
8 | 6868433880000 |
9 | 1776393899280000 |
10 | 570349326947400000 |
11 | 222585024290428800000 |
12 | 103769138324197906560000 |
13 | 56957727035726406489600000 |
14 | 36357688414546530128697600000 |
15 | 26705308554813693259046592000000 |
16 | 22364482036994885663848836864000000 |