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 | 54 |
3 | 2460 |
4 | 239190 |
5 | 33124140 |
6 | 6896500380 |
7 | 1879519201560 |
8 | 674900483206950 |
9 | 300426422192196300 |
10 | 164868151446145847700 |
11 | 108046627817926248851400 |
12 | 83890281074290204071858300 |
13 | 75722368306901033144261835000 |