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 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 70 |
9 | 1260 |
10 | 17850 |
11 | 242550 |
12 | 3350655 |
13 | 48108060 |
14 | 724403680 |
15 | 11478967500 |
16 | 191632761320 |
17 | 3369643717440 |
18 | 62346624827760 |
19 | 1212116258480400 |
20 | 24721764604046280 |
21 | 528066880710319440 |
22 | 11793526736005503720 |
23 | 274937000436908714520 |