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 | 2 |
3 | 3 |
4 | 52 |
5 | 110 |
6 | 2690 |
7 | 11676 |
8 | 247952 |
9 | 1434600 |
10 | 37576168 |
11 | 296088760 |
12 | 7698854216 |
13 | 78083294640 |
14 | 2187100997328 |
15 | 27174552638520 |
16 | 806871808214016 |
17 | 11698163585372736 |
18 | 370098862531800000 |
19 | 6300404006917434624 |
20 | 208037772410558058624 |
21 | 4032385785901175122560 |
22 | 141272996628892396692096 |