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) |
---|---|
1 | 0 |
2 | 1 |
3 | 4 |
4 | 30 |
5 | 296 |
6 | 3720 |
7 | 56652 |
8 | 1014832 |
9 | 20909520 |
10 | 487198080 |
11 | 12667470740 |
12 | 363607605504 |
13 | 11420819358456 |
14 | 389646915374080 |
15 | 14349217119054300 |
16 | 567315485527234560 |
17 | 23967624180805666208 |
18 | 1077568488585047605248 |
19 | 51369752823292604784420 |
20 | 2588268388538639982592000 |