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 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 6 |
| 8 | 11 |
| 9 | 21 |
| 10 | 41 |
| 11 | 81 |
| 12 | 164 |
| 13 | 333 |
| 14 | 684 |
| 15 | 1417 |
| 16 | 2965 |
| 17 | 6229 |
| 18 | 13182 |
| 19 | 28019 |
| 20 | 59862 |
| 21 | 128376 |
| 22 | 276408 |
| 23 | 597041 |
| 24 | 1293763 |
| 25 | 2811181 |
| 26 | 6124479 |
| 27 | 13374201 |
| 28 | 29270703 |
| 29 | 64191331 |
| 30 | 141041901 |
| 31 | 310444472 |
| 32 | 684445543 |
| 33 | 1511345542 |
| 34 | 3342101662 |
| 35 | 7400605768 |
| 36 | 16408670095 |