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 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 10 |
| 8 | 22 |
| 9 | 45 |
| 10 | 102 |
| 11 | 226 |
| 12 | 531 |
| 13 | 1253 |
| 14 | 3044 |
| 15 | 7456 |
| 16 | 18604 |
| 17 | 46798 |
| 18 | 119133 |
| 19 | 305567 |
| 20 | 790375 |
| 21 | 2057523 |
| 22 | 5390759 |
| 23 | 14200122 |
| 24 | 37598572 |
| 25 | 100005401 |
| 26 | 267131927 |
| 27 | 716318650 |
| 28 | 1927758155 |
| 29 | 5205240762 |
| 30 | 14098580633 |
| 31 | 38296720823 |
| 32 | 104308468102 |
| 33 | 284822276099 |