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 | 4 |
3 | 6 |
4 | 272 |
5 | 1570 |
6 | 63912 |
7 | 792554 |
8 | 33262784 |
9 | 684763650 |
10 | 30981768680 |
11 | 915838324522 |
12 | 45524048263872 |
13 | 1765020653500130 |
14 | 97096528136899592 |
15 | 4651295721203951850 |
16 | 283478019364268181632 |
17 | 16107548441248677913858 |
18 | 1084981357752210351649512 |
19 | 71056829948555342150405354 |
20 | 5267564532376249471978526720 |