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 | 4 |
2 | 28 |
3 | 140 |
4 | 1820 |
5 | 7280 |
6 | 138320 |
7 | 1521520 |
8 | 7607600 |
9 | 7607600 |
10 | 235835600 |
11 | 4009205200 |
12 | 148340592400 |
13 | 148340592400 |
14 | 6378645473200 |
15 | 146708845883600 |
16 | 1026961921185200 |
17 | 1026961921185200 |
18 | 1026961921185200 |
19 | 29781895714370800 |