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 | 1 |
2 | 2 |
3 | 9 |
4 | 56 |
5 | 480 |
6 | 4374 |
7 | 47894 |
8 | 574888 |
9 | 7829424 |
10 | 116392080 |
11 | 1901059512 |
12 | 33564909432 |
13 | 639562529424 |
14 | 13047133134840 |
15 | 283976169754440 |
16 | 6563364026374464 |
17 | 160538113862231808 |
18 | 4141949353327046592 |
19 | 112396373034208003008 |
20 | 3199752121483607518080 |