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 | 3 |
| 2 | 26 |
| 3 | 416 |
| 4 | 9708 |
| 5 | 297662 |
| 6 | 11306572 |
| 7 | 512307336 |
| 8 | 26968496504 |
| 9 | 1617489748394 |
| 10 | 108885682104744 |
| 11 | 8129721925098468 |
| 12 | 666736347200187804 |
| 13 | 59582961423951290184 |
| 14 | 5762936296492591067968 |
| 15 | 599807329803134064385488 |
| 16 | 66843498592187788579795440 |