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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 12 |
| 7 | 24 |
| 8 | 49 |
| 9 | 105 |
| 10 | 231 |
| 11 | 517 |
| 12 | 1188 |
| 13 | 2783 |
| 14 | 6643 |
| 15 | 16101 |
| 16 | 39606 |
| 17 | 98605 |
| 18 | 248287 |
| 19 | 631214 |
| 20 | 1618878 |
| 21 | 4183964 |
| 22 | 10889305 |
| 23 | 28517954 |
| 24 | 75111521 |
| 25 | 198851386 |
| 26 | 528929895 |
| 27 | 1412993746 |
| 28 | 3789733399 |
| 29 | 10201625514 |
| 30 | 27555373561 |
| 31 | 74664487653 |
| 32 | 202908119046 |
| 33 | 552939614498 |