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 | 15 |
3 | 70 |
4 | 405 |
5 | 2676 |
6 | 19075 |
7 | 142562 |
8 | 1100961 |
9 | 8711968 |
10 | 70257055 |
11 | 575269278 |
12 | 4769615773 |
13 | 39961571228 |
14 | 337805166747 |
15 | 2877506096794 |
16 | 24675158973081 |
17 | 212835736433304 |
18 | 1845348003175063 |
19 | 16073746202176150 |
20 | 140590118902532757 |
21 | 1234285061013293716 |