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 | 2 |
2 | 8 |
3 | 40 |
4 | 240 |
5 | 1664 |
6 | 12992 |
7 | 112256 |
8 | 1059840 |
9 | 10827264 |
10 | 118758400 |
11 | 1389711360 |
12 | 17258893312 |
13 | 226463227904 |
14 | 3127694491648 |
15 | 45316785602560 |
16 | 686826595745792 |
17 | 10861264214949888 |
18 | 178802342273744896 |
19 | 3058036745204924416 |
20 | 54236710945813430272 |
21 | 995874184692762673152 |