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 | 8 |
| 2 | 44 |
| 3 | 184 |
| 4 | 654 |
| 5 | 2040 |
| 6 | 5772 |
| 7 | 15048 |
| 8 | 36693 |
| 9 | 84448 |
| 10 | 184976 |
| 11 | 387872 |
| 12 | 782680 |
| 13 | 1525920 |
| 14 | 2884560 |
| 15 | 5302368 |
| 16 | 9502014 |
| 17 | 16635792 |
| 18 | 28509272 |
| 19 | 47902192 |
| 20 | 79030348 |
| 21 | 128192240 |
| 22 | 204676056 |
| 23 | 322002576 |
| 24 | 499629966 |