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 | 5 |
| 6 | 9 |
| 7 | 16 |
| 8 | 29 |
| 9 | 56 |
| 10 | 110 |
| 11 | 222 |
| 12 | 465 |
| 13 | 1003 |
| 14 | 2226 |
| 15 | 5101 |
| 16 | 12010 |
| 17 | 29062 |
| 18 | 72200 |
| 19 | 183886 |
| 20 | 479544 |
| 21 | 1279228 |
| 22 | 3486584 |
| 23 | 9699975 |
| 24 | 27520936 |
| 25 | 79563707 |
| 26 | 234204235 |
| 27 | 701458966 |
| 28 | 2136296638 |
| 29 | 6611816700 |
| 30 | 20784932424 |
| 31 | 66333327604 |
| 32 | 214819211047 |
| 33 | 705650404444 |
| 34 | 2350231740975 |