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 | 6 |
4 | 24 |
5 | 185 |
6 | 990 |
7 | 9877 |
8 | 72968 |
9 | 824553 |
10 | 8495560 |
11 | 102689741 |
12 | 1317098772 |
13 | 18729163609 |
14 | 270642677396 |
15 | 4396374315075 |
16 | 73997950572016 |
17 | 1318896555293137 |
18 | 24900891903482832 |
19 | 499312682762581945 |
20 | 10301544926241347140 |
21 | 227464062944112566481 |