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 | 1 |
2 | 2 |
3 | 8 |
4 | 46 |
5 | 340 |
6 | 3080 |
7 | 33020 |
8 | 408760 |
9 | 5737600 |
10 | 90041480 |
11 | 1562155760 |
12 | 29688699040 |
13 | 613378208080 |
14 | 13687826477600 |
15 | 328103392918400 |
16 | 8407745335871200 |
17 | 229363476365320000 |
18 | 6636554484183747200 |
19 | 203007064284501963200 |
20 | 6545704564601880726400 |
21 | 221887453210925123353600 |