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 | 0 |
2 | 0 |
3 | 6 |
4 | 12 |
5 | 40 |
6 | 2700 |
7 | 21168 |
8 | 173040 |
9 | 7611840 |
10 | 125415360 |
11 | 1848591360 |
12 | 71211998880 |
13 | 1844075600640 |
14 | 41500836336960 |
15 | 1609925690419200 |
16 | 55708371912211200 |
17 | 1719475797882286080 |
18 | 72091120665964654080 |
19 | 3046645011228998860800 |
20 | 119757727692451283097600 |