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 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 12 |
| 6 | 24 |
| 7 | 38 |
| 8 | 52 |
| 9 | 111 |
| 10 | 218 |
| 11 | 286 |
| 12 | 520 |
| 13 | 792 |
| 14 | 1358 |
| 15 | 2628 |
| 16 | 4155 |
| 17 | 5508 |
| 18 | 9246 |
| 19 | 13182 |
| 20 | 23480 |
| 21 | 45150 |
| 22 | 54540 |
| 23 | 94986 |
| 24 | 146016 |
| 25 | 213725 |
| 26 | 301104 |
| 27 | 478586 |
| 28 | 851506 |
| 29 | 1302234 |
| 30 | 1775482 |
| 31 | 2696942 |
| 32 | 3746894 |
| 33 | 6077784 |
| 34 | 8194466 |
| 35 | 12638334 |
| 36 | 21763463 |
| 37 | 28423976 |
| 38 | 45309850 |
| 39 | 62955524 |
| 40 | 94345474 |