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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 7 |
| 7 | 15 |
| 8 | 44 |
| 9 | 129 |
| 10 | 340 |
| 11 | 804 |
| 12 | 1742 |
| 13 | 3550 |
| 14 | 7009 |
| 15 | 13835 |
| 16 | 28033 |
| 17 | 58993 |
| 18 | 128136 |
| 19 | 282569 |
| 20 | 622575 |
| 21 | 1357136 |
| 22 | 2918449 |
| 23 | 6204578 |
| 24 | 13104675 |
| 25 | 27646776 |
| 26 | 58502733 |
| 27 | 124411595 |
| 28 | 265807567 |
| 29 | 569552644 |
| 30 | 1221316021 |
| 31 | 2616456236 |
| 32 | 5595314908 |
| 33 | 11944318042 |
| 34 | 25466629978 |