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 | 18 |
3 | 5616 |
4 | 6776352 |
5 | 20200266000 |
6 | 119799079486272 |
7 | 1242032508354758400 |
8 | 20634722510624457007104 |
9 | 515736410631216295520236032 |
10 | 18480208067078637967802351884800 |
11 | 913939154183946975187574927409795072 |
12 | 60487962958244860971401604975128195088384 |