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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 7 |
| 7 | 12 |
| 8 | 27 |
| 9 | 57 |
| 10 | 128 |
| 11 | 285 |
| 12 | 659 |
| 13 | 1518 |
| 14 | 3561 |
| 15 | 8389 |
| 16 | 19936 |
| 17 | 47607 |
| 18 | 114397 |
| 19 | 276018 |
| 20 | 669035 |
| 21 | 1627491 |
| 22 | 3973106 |
| 23 | 9728991 |
| 24 | 23892779 |
| 25 | 58828866 |
| 26 | 145201423 |
| 27 | 359182693 |
| 28 | 890350290 |
| 29 | 2211257973 |
| 30 | 5501701981 |
| 31 | 13711368630 |
| 32 | 34225162345 |
| 33 | 85555609119 |
| 34 | 214166692430 |
| 35 | 536810116905 |