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 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 4 |
| 5 | 9 |
| 6 | 19 |
| 7 | 40 |
| 8 | 84 |
| 9 | 186 |
| 10 | 413 |
| 11 | 922 |
| 12 | 2082 |
| 13 | 4733 |
| 14 | 10831 |
| 15 | 24928 |
| 16 | 57648 |
| 17 | 133923 |
| 18 | 312393 |
| 19 | 731328 |
| 20 | 1717784 |
| 21 | 4047111 |
| 22 | 9561517 |
| 23 | 22647521 |
| 24 | 53770164 |
| 25 | 127941813 |
| 26 | 305046676 |
| 27 | 728688803 |
| 28 | 1743752229 |
| 29 | 4179697971 |
| 30 | 10034077377 |
| 31 | 24123567285 |
| 32 | 58076419495 |
| 33 | 139996849639 |