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 | 2 |
2 | 15 |
3 | 108 |
4 | 774 |
5 | 5544 |
6 | 39708 |
7 | 284400 |
8 | 2036952 |
9 | 14589216 |
10 | 104492016 |
11 | 748400832 |
12 | 5360254560 |
13 | 38391631488 |
14 | 274971524544 |
15 | 1969422407424 |
16 | 14105550112128 |
17 | 101027866452480 |
18 | 723589630947072 |
19 | 5182549848861696 |
20 | 37118861005211136 |
21 | 265855588948518912 |