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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 11 |
| 7 | 66 |
| 8 | 287 |
| 9 | 1013 |
| 10 | 3081 |
| 11 | 8372 |
| 12 | 20824 |
| 13 | 48192 |
| 14 | 105117 |
| 15 | 217945 |
| 16 | 433017 |
| 17 | 828346 |
| 18 | 1534271 |
| 19 | 2759132 |
| 20 | 4837638 |
| 21 | 8283014 |
| 22 | 13894554 |
| 23 | 22856717 |
| 24 | 36968045 |
| 25 | 58818578 |
| 26 | 92258215 |
| 27 | 142699970 |
| 28 | 218041302 |
| 29 | 329162610 |
| 30 | 491683915 |
| 31 | 726746512 |
| 32 | 1064266795 |
| 33 | 1544134041 |