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 | 2 |
| 4 | 4 |
| 5 | 6 |
| 6 | 12 |
| 7 | 18 |
| 8 | 34 |
| 9 | 58 |
| 10 | 106 |
| 11 | 186 |
| 12 | 350 |
| 13 | 630 |
| 14 | 1180 |
| 15 | 2190 |
| 16 | 4114 |
| 17 | 7710 |
| 18 | 14600 |
| 19 | 27594 |
| 20 | 52486 |
| 21 | 99878 |
| 22 | 190744 |
| 23 | 364722 |
| 24 | 699250 |
| 25 | 1342182 |
| 26 | 2581426 |
| 27 | 4971066 |
| 28 | 9587578 |
| 29 | 18512790 |
| 30 | 35792566 |
| 31 | 69273666 |
| 32 | 134219794 |
| 33 | 260301174 |
| 34 | 505294126 |
| 35 | 981706830 |
| 36 | 1908881898 |