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 | 1 |
2 | 2 |
3 | 9 |
4 | 56 |
5 | 360 |
6 | 2934 |
7 | 26054 |
8 | 269128 |
9 | 3010680 |
10 | 37616880 |
11 | 504880992 |
12 | 7387701672 |
13 | 115228447152 |
14 | 1929016301016 |
15 | 34194883090440 |
16 | 643667407174464 |
17 | 12757366498618176 |
18 | 266426229010029696 |
19 | 5830527979298793024 |
20 | 133665090871032478080 |
21 | 3197905600674249843840 |