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 | 3 |
2 | 28224 |
3 | 2317591180800 |
4 | 112554991177798901760000 |
5 | 52386144472825139642572263782154240000 |
6 | 14630778277213500974314928221817819519899234908241920000 |