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 | 6 |
3 | 20 |
4 | 80 |
5 | 368 |
6 | 1904 |
7 | 10880 |
8 | 67904 |
9 | 459008 |
10 | 3336704 |
11 | 25925120 |
12 | 214175744 |
13 | 1873092608 |
14 | 17276401664 |
15 | 167504076800 |
16 | 1702214549504 |
17 | 18084149854208 |
18 | 200388963958784 |
19 | 2311212530401280 |
20 | 27693720143396864 |
21 | 344157474490155008 |
22 | 4428851361694613504 |
23 | 58933575269230837760 |