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 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 20 |
7 | 210 |
8 | 1960 |
9 | 18900 |
10 | 194880 |
11 | 2166780 |
12 | 26356880 |
13 | 349806600 |
14 | 5029088064 |
15 | 77748751080 |
16 | 1284349422720 |
17 | 22551300670080 |
18 | 419191223208384 |
19 | 8222848137607680 |
20 | 169760091173740800 |
21 | 3679746265902067200 |
22 | 83564915096633308800 |
23 | 1984162781781147770880 |