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 | 17 |
| 2 | 610 |
| 3 | 6433 |
| 4 | 37366 |
| 5 | 152243 |
| 6 | 490222 |
| 7 | 1334838 |
| 8 | 3205770 |
| 9 | 6983372 |
| 10 | 14071004 |
| 11 | 26600198 |
| 12 | 47683715 |
| 13 | 81721509 |
| 14 | 134764658 |
| 15 | 214942297 |
| 16 | 332956585 |
| 17 | 502650756 |
| 18 | 741655290 |
| 19 | 1072117239 |
| 20 | 1521517764 |
| 21 | 2123582899 |
| 22 | 2919292602 |
| 23 | 3957993128 |