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 | 0 |
1 | 0 |
2 | 4 |
3 | 18 |
4 | 120 |
5 | 1110 |
6 | 13140 |
7 | 189042 |
8 | 3197040 |
9 | 62093358 |
10 | 1361253900 |
11 | 33236925546 |
12 | 894243758760 |
13 | 26281928034726 |
14 | 837663638344260 |
15 | 28775491618091490 |
16 | 1059805146165293280 |
17 | 41657455054069680414 |
18 | 1740535210734651716220 |
19 | 77029901631623181859674 |