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 | 14 |
| 2 | 185 |
| 3 | 2640 |
| 4 | 41685 |
| 5 | 729330 |
| 6 | 14073885 |
| 7 | 297693900 |
| 8 | 6859400625 |
| 9 | 171172905750 |
| 10 | 4601737965825 |
| 11 | 132643472761800 |
| 12 | 4082080279402125 |
| 13 | 133614981594344250 |
| 14 | 4635763624512145125 |
| 15 | 169957871025837394500 |