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 | 3 |
3 | 10 |
4 | 34 |
5 | 104 |
6 | 200 |
7 | -400 |
8 | -2800 |
9 | 85120 |
10 | 2163840 |
11 | 30240000 |
12 | 285331200 |
13 | 1247769600 |
14 | -15759744000 |
15 | -392840448000 |
16 | -1587505920000 |
17 | 123384188928000 |
18 | 4345827053568000 |
19 | 82159404687360000 |
20 | 749393890172928000 |
21 | -10215518583029760000 |
22 | -570363673124044800000 |
23 | -9916595355495628800000 |