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 | 5 |
3 | 40 |
4 | 355 |
5 | 3495 |
6 | 36251 |
7 | 391650 |
8 | 4355810 |
9 | 49550130 |
10 | 573811635 |
11 | 6742112506 |
12 | 80175836395 |
13 | 963137138105 |
14 | 11670425726255 |
15 | 142471372540290 |
16 | 1750641388279500 |
17 | 21634966222174020 |
18 | 268734270298502640 |