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 | 2 |
3 | 9 |
4 | 48 |
5 | 330 |
6 | 2760 |
7 | 26670 |
8 | 295680 |
9 | 3686760 |
10 | 51080400 |
11 | 778516200 |
12 | 12944131200 |
13 | 233156523600 |
14 | 4522777459200 |
15 | 94000269963600 |
16 | 2083918752115200 |
17 | 49086474041404800 |
18 | 1224240044169542400 |
19 | 32229413145084355200 |
20 | 893129953569780326400 |
21 | 25987602379142314310400 |
22 | 792175050968260985625600 |