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 | 3 |
| 3 | 7 |
| 4 | 16 |
| 5 | 38 |
| 6 | 90 |
| 7 | 205 |
| 8 | 448 |
| 9 | 958 |
| 10 | 2053 |
| 11 | 4469 |
| 12 | 9865 |
| 13 | 21849 |
| 14 | 48061 |
| 15 | 104528 |
| 16 | 225121 |
| 17 | 482604 |
| 18 | 1035645 |
| 19 | 2232465 |
| 20 | 4834839 |
| 21 | 10493118 |
| 22 | 22741212 |
| 23 | 49074143 |
| 24 | 105310104 |
| 25 | 224848260 |
| 26 | 478534828 |
| 27 | 1017589272 |
| 28 | 2166420555 |
| 29 | 4622251945 |
| 30 | 9880423145 |
| 31 | 21130501775 |
| 32 | 45125126211 |