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) |
---|---|
1 | 2 |
2 | 3 |
3 | 20 |
4 | 150 |
5 | 1860 |
6 | 24950 |
7 | 444060 |
8 | 8583780 |
9 | 202071920 |
10 | 5992771854 |
11 | 186947632200 |
12 | 7001535703840 |
13 | 288868991951760 |
14 | 12455290280427090 |
15 | 587972068547997856 |
16 | 31327583556941402160 |
17 | 1856116108295418943020 |
18 | 113366872636395265380920 |
19 | 7619343577986975410930880 |
20 | 541957669076266398658079700 |