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 | 12 |
2 | 120 |
3 | 30240 |
4 | 17297280 |
5 | 28158588057600 |
6 | 64764752532480000 |
7 | 830034394580628357120000 |
8 | 4299578163927654889881600000 |
9 | 212850788988365112429784203264000000 |
10 | 265847614191284935213187014536606662000640000000 |