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 | 6 |
| 7 | 10 |
| 8 | 19 |
| 9 | 33 |
| 10 | 62 |
| 11 | 110 |
| 12 | 204 |
| 13 | 366 |
| 14 | 677 |
| 15 | 1223 |
| 16 | 2254 |
| 17 | 4089 |
| 18 | 7526 |
| 19 | 13692 |
| 20 | 25171 |
| 21 | 45882 |
| 22 | 84291 |
| 23 | 153860 |
| 24 | 282509 |
| 25 | 516192 |
| 26 | 947469 |
| 27 | 1732477 |
| 28 | 3179083 |
| 29 | 5816301 |
| 30 | 10670751 |
| 31 | 19531034 |
| 32 | 35826689 |
| 33 | 65596323 |
| 34 | 120312363 |
| 35 | 220340374 |
| 36 | 404096665 |
| 37 | 740212002 |
| 38 | 1357426934 |