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 | 191601229820 |
17 | 3367499575440 |
18 | 62253354650760 |
19 | 1208755315895400 |
20 | 24611454394536780 |
21 | 524613603866302440 |
22 | 11687734234226039220 |
23 | 271715852337632107020 |