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 | 6 |
2 | 30 |
3 | 156 |
4 | 804 |
5 | 4152 |
6 | 21432 |
7 | 110640 |
8 | 571152 |
9 | 2948448 |
10 | 15220704 |
11 | 78573504 |
12 | 405618240 |
13 | 2093913984 |
14 | 10809365376 |
15 | 55800945408 |
16 | 288059973888 |
17 | 1487045568000 |
18 | 7676542115328 |
19 | 39628441869312 |
20 | 204573020169216 |
21 | 1056062731892736 |
22 | 5451689048586240 |
23 | 28143132585701376 |