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 | 20 |
3 | 1884 |
4 | 37680 |
5 | 1492176 |
6 | 26342820 |
7 | 810566001 |
8 | 14317221700 |
9 | 374392387808 |
10 | 6675906932160 |
11 | 162189676788683 |
12 | 2927729818922000 |
13 | 67871228115916800 |
14 | 1241683361279242560 |