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 | 630 |
2 | 1385670 |
3 | 3528923580 |
4 | 9540949030470 |
5 | 26651569523959380 |
6 | 75998432812419471900 |
7 | 219813190240007470094520 |
8 | 642409325786050322446410310 |
9 | 1892390644737640220059489996260 |