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 | 6 |
| 2 | 110 |
| 3 | 2562 |
| 4 | 66222 |
| 5 | 1815506 |
| 6 | 51697802 |
| 7 | 1511679210 |
| 8 | 45076309166 |
| 9 | 1364497268946 |
| 10 | 41800229045610 |
| 11 | 1292986222651646 |
| 12 | 40317756506959050 |
| 13 | 1265712901796074842 |
| 14 | 39965073938276694002 |
| 15 | 1268208750951634765562 |
| 16 | 40419340092267053380782 |
| 17 | 1293151592990764737265490 |