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) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 4 |
5 | 80 |
6 | 1860 |
7 | 64680 |
8 | 3666600 |
9 | 354093264 |
10 | 59372032440 |
11 | 17572209206640 |
12 | 9347625940951980 |
13 | 9099961952914672840 |
14 | 16480899322963497105684 |
15 | 56311549004017312945310280 |
16 | 367105988116570172056739960080 |