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 | 1 |
| 2 | 12 |
| 3 | 69 |
| 4 | 260 |
| 5 | 751 |
| 6 | 1812 |
| 7 | 3843 |
| 8 | 7400 |
| 9 | 13221 |
| 10 | 22252 |
| 11 | 35673 |
| 12 | 54924 |
| 13 | 81731 |
| 14 | 118132 |
| 15 | 166503 |
| 16 | 229584 |
| 17 | 310505 |
| 18 | 412812 |
| 19 | 540493 |
| 20 | 698004 |
| 21 | 890295 |
| 22 | 1122836 |
| 23 | 1401643 |
| 24 | 1733304 |
| 25 | 2125005 |
| 26 | 2584556 |
| 27 | 3120417 |
| 28 | 3741724 |
| 29 | 4458315 |
| 30 | 5280756 |
| 31 | 6220367 |
| 32 | 7289248 |
| 33 | 8500305 |
| 34 | 9867276 |