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 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 14 |
| 6 | 20 |
| 7 | 38 |
| 8 | 74 |
| 9 | 134 |
| 10 | 232 |
| 11 | 486 |
| 12 | 526 |
| 13 | 1078 |
| 14 | 2036 |
| 15 | 2505 |
| 16 | 4762 |
| 17 | 9929 |
| 18 | 14598 |
| 19 | 29831 |
| 20 | 31521 |
| 21 | 52223 |
| 22 | 101123 |
| 23 | 207892 |
| 24 | 215796 |
| 25 | 426772 |
| 26 | 836665 |
| 27 | 1640357 |
| 28 | 1689653 |
| 29 | 3401483 |
| 30 | 3471770 |
| 31 | 6868800 |
| 32 | 13470379 |
| 33 | 23182192 |
| 34 | 45792615 |
| 35 | 47136366 |