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) |
|---|---|
| 9 | 0 |
| 10 | 2 |
| 11 | 12 |
| 12 | 47 |
| 13 | 169 |
| 14 | 477 |
| 15 | 1169 |
| 16 | 2504 |
| 17 | 5083 |
| 18 | 10060 |
| 19 | 19531 |
| 20 | 36004 |
| 21 | 62654 |
| 22 | 103326 |
| 23 | 164132 |
| 24 | 253914 |
| 25 | 386429 |
| 26 | 580424 |
| 27 | 862419 |
| 28 | 1266725 |
| 29 | 1839456 |
| 30 | 2638409 |
| 31 | 3737879 |
| 32 | 5226949 |
| 33 | 7215039 |
| 34 | 9830238 |
| 35 | 13228817 |
| 36 | 17596011 |
| 37 | 23161194 |
| 38 | 30200288 |
| 39 | 39055376 |
| 40 | 50136943 |
| 41 | 63946416 |
| 42 | 81075682 |