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 | 0 |
1 | 1 |
2 | 0 |
3 | 3 |
4 | 7 |
5 | 90 |
6 | 676 |
7 | 9058 |
8 | 117286 |
9 | 1934068 |
10 | 34354196 |
11 | 698971944 |
12 | 15520697072 |
13 | 379690093016 |
14 | 10064445063128 |
15 | 288507479108384 |
16 | 8875736500909216 |
17 | 291965748820524000 |
18 | 10221371162528667136 |
19 | 379535362671828005536 |
20 | 14896748155197456096736 |