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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 7 |
| 8 | 11 |
| 9 | 17 |
| 10 | 28 |
| 11 | 49 |
| 12 | 87 |
| 13 | 152 |
| 14 | 262 |
| 15 | 453 |
| 16 | 794 |
| 17 | 1408 |
| 18 | 2507 |
| 19 | 4462 |
| 20 | 7943 |
| 21 | 14179 |
| 22 | 25415 |
| 23 | 45713 |
| 24 | 82398 |
| 25 | 148731 |
| 26 | 268859 |
| 27 | 486890 |
| 28 | 883411 |
| 29 | 1605582 |
| 30 | 2922259 |
| 31 | 5325377 |
| 32 | 9716564 |
| 33 | 17750332 |
| 34 | 32464980 |
| 35 | 59443403 |
| 36 | 108951953 |
| 37 | 199886003 |
| 38 | 367052947 |
| 39 | 674620772 |