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 | 45 |
3 | 4211 |
4 | 704120 |
5 | 191875384 |
6 | 79755181632 |
7 | 48072816950976 |
8 | 40372248180436992 |
9 | 45735898093934800896 |
10 | 68049684624570789888000 |
11 | 130036437291331549384704000 |
12 | 313117351023401464093212672000 |