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 | 4 |
2 | 18 |
3 | 92 |
4 | 532 |
5 | 3440 |
6 | 24552 |
7 | 191280 |
8 | 1612304 |
9 | 14597952 |
10 | 141123872 |
11 | 1449324992 |
12 | 15743376704 |
13 | 180203389696 |
14 | 2166381979264 |
15 | 27274611880704 |
16 | 358690234163456 |
17 | 4916123783848960 |
18 | 70076765972288000 |
19 | 1036967662211324928 |
20 | 15902394743591408640 |