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 | 1 |
2 | 2 |
3 | 6 |
4 | 48 |
5 | 360 |
6 | 2820 |
7 | 31500 |
8 | 393568 |
9 | 5111568 |
10 | 78491520 |
11 | 1345893120 |
12 | 24286008384 |
13 | 483716087712 |
14 | 10526811186528 |
15 | 241867328844960 |
16 | 5957816820215040 |
17 | 157412355684364800 |
18 | 4380674530640290560 |
19 | 128826276098289179904 |
20 | 4010282529115722232320 |