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 | 1 |
3 | 6 |
4 | 50 |
5 | 520 |
6 | 6312 |
7 | 86080 |
8 | 1288704 |
9 | 20862720 |
10 | 361454720 |
11 | 6652338176 |
12 | 129341001216 |
13 | 2645494627328 |
14 | 56734280221696 |
15 | 1272300911597568 |
16 | 29769957834147840 |
17 | 725430667245355008 |
18 | 18379623419316338688 |
19 | 483476314203202945024 |
20 | 13187069277429966733312 |
21 | 372512001057014648537088 |
22 | 10886129458069912361631744 |
23 | 328776894530826384975593472 |