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 | 0 |
2 | 1 |
3 | 6 |
4 | 25 |
5 | 90 |
6 | 300 |
7 | 952 |
8 | 2912 |
9 | 8640 |
10 | 24960 |
11 | 70400 |
12 | 194304 |
13 | 525824 |
14 | 1397760 |
15 | 3655680 |
16 | 9420800 |
17 | 23953408 |
18 | 60162048 |
19 | 149422080 |
20 | 367329280 |
21 | 894566400 |
22 | 2159804416 |
23 | 5173149696 |
24 | 12299796480 |
25 | 29045555200 |
26 | 68157440000 |
27 | 158997676032 |
28 | 368880648192 |
29 | 851443712000 |
30 | 1955887841280 |