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 | 1 |
2 | 2 |
3 | 12 |
4 | 120 |
5 | 1680 |
6 | 30232 |
7 | 664832 |
8 | 17277120 |
9 | 518031360 |
10 | 17602865312 |
11 | 668505311232 |
12 | 28059791760000 |
13 | 1289932186583040 |
14 | 64455076284318592 |
15 | 3478305412257677312 |
16 | 201608948937441269760 |
17 | 12491465252403224248320 |
18 | 823886511479340063068672 |
19 | 57633367371058675735068672 |