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 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 4 |
5 | 10 |
6 | 40 |
7 | 210 |
8 | 1904 |
9 | 15120 |
10 | 132600 |
11 | 1293600 |
12 | 14673120 |
13 | 178738560 |
14 | 2341182480 |
15 | 32915282400 |
16 | 499117301760 |
17 | 8075042976000 |
18 | 138689356915200 |
19 | 2519863488979200 |
20 | 48354005826489600 |
21 | 976893364144857600 |
22 | 20721305503846886400 |
23 | 460363370406207206400 |