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) |
---|---|
2 | 1 |
3 | 132 |
4 | 1460808 |
5 | 6357011889600 |
6 | 44491520971919463292800 |
7 | 2082476039060691409777705387034081280 |
8 | 2712373659248840873249840585282508476815021942277876736 |
9 | 410721884168854528740774423430429149549703377187068577398353854503625738636800 |