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) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 150 |
4 | 13032 |
5 | 3513720 |
6 | 2722682160 |
7 | 5739447495600 |
8 | 31598877919109760 |
9 | 440333998013384657280 |
10 | 15150599165671354541318400 |
11 | 1261508968034974650352062240000 |
12 | 250009928097136435131869478983500800 |
13 | 116299581308873767293693697630883742796800 |