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 | 1 |
2 | 5 |
3 | 26 |
4 | 182 |
5 | 1704 |
6 | 19992 |
7 | 281392 |
8 | 4620464 |
9 | 86707584 |
10 | 1830550400 |
11 | 42940149504 |
12 | 1107995749632 |
13 | 31188982438912 |
14 | 951100528802816 |
15 | 31234626965637120 |
16 | 1099029746752575488 |
17 | 41248797730190032896 |
18 | 1644909773059509682176 |