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 | 36 |
4 | 464 |
5 | 8560 |
6 | 206112 |
7 | 6104896 |
8 | 214376192 |
9 | 8701657344 |
10 | 400748710400 |
11 | 20642974511104 |
12 | 1175888936749056 |
13 | 73389707156586496 |
14 | 4980134850525986816 |
15 | 365062349226075463680 |
16 | 28747688571714736160768 |
17 | 2420266280392895064506368 |