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) |
---|---|
6 | 120 |
7 | 5880 |
8 | 215040 |
9 | 7348320 |
10 | 252000000 |
11 | 8928667440 |
12 | 331079253120 |
13 | 12919902035040 |
14 | 531665809234560 |
15 | 23074929870993000 |
16 | 1055390757120860160 |
17 | 50802829404718896960 |
18 | 2569731417499060039680 |
19 | 136361684705644061566560 |
20 | 7578327282420081922560000 |