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 | 5 |
3 | 140 |
4 | 25200 |
5 | 55036800 |
6 | 951035904000 |
7 | 222618484408320000 |
8 | 440079343769868042240000 |
9 | 12254449406615745504215040000000 |
10 | 7909254579604123100510930935480320000000 |
11 | 48073937540175558516708030362614204937011200000000 |