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 | 6 |
4 | 18 |
5 | 18 |
6 | 96 |
7 | 540 |
8 | 1350 |
9 | 3480 |
10 | 16470 |
11 | 61020 |
12 | 175860 |
13 | 627480 |
14 | 2498580 |
15 | 8520876 |
16 | 28563570 |
17 | 106917300 |
18 | 393495396 |
19 | 1369171188 |
20 | 4914119826 |
21 | 18191218716 |
22 | 65741140080 |
23 | 235643531508 |
24 | 862450963704 |
25 | 3163777886412 |
26 | 11484836808588 |
27 | 41875694151720 |