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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 1 |
| 10 | 11 |
| 11 | 67 |
| 12 | 299 |
| 13 | 1093 |
| 14 | 3473 |
| 15 | 9949 |
| 16 | 26333 |
| 17 | 65536 |
| 18 | 155382 |
| 19 | 354522 |
| 20 | 784626 |
| 21 | 1695222 |
| 22 | 3593934 |
| 23 | 7507638 |
| 24 | 15505590 |
| 25 | 31746651 |
| 26 | 64574877 |
| 27 | 130712029 |
| 28 | 263644133 |
| 29 | 530396371 |
| 30 | 1065084887 |
| 31 | 2136022699 |
| 32 | 4279934123 |
| 33 | 8570386546 |