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 | 2 |
3 | 24 |
4 | 331776 |
5 | 2524286414780230533120 |
6 | 18356962141505758798331790171539976807981714702571497465907439808868887035904000000 |