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 | 1 |
2 | 2 |
3 | 6 |
4 | 15 |
5 | 42 |
6 | 143 |
7 | 399 |
8 | 1190 |
9 | 4209 |
10 | 13130 |
11 | 41591 |
12 | 118590 |
13 | 404471 |
14 | 1158696 |
15 | 3893831 |
16 | 12222320 |
17 | 39428991 |
18 | 123471920 |
19 | 397952081 |
20 | 1297210320 |