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 | 10 |
3 | 2520 |
4 | 49008960 |
5 | 1052427228652800 |
6 | 18543848132205515927808000 |
7 | 3663312848979081767807855264321333760000 |
8 | 1860046674511129497317809046448809961990598435124736000000 |
9 | 46250563343969315569958487234182581699417368835772148395100189090556723200000000 |