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 | 4 |
2 | 54 |
3 | 1268 |
4 | 47160 |
5 | 2554662 |
6 | 190078056 |
7 | 18606677896 |
8 | 2318813824608 |
9 | 358492207288970 |
10 | 67333875395774328 |
11 | 15102514680368359884 |
12 | 3987129515288957842896 |
13 | 1223885425250059522524238 |