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) |
|---|---|
| 1 | 8 |
| 2 | 456 |
| 3 | 27780 |
| 4 | 1691690 |
| 5 | 103015508 |
| 6 | 6273056950 |
| 7 | 381992581548 |
| 8 | 23261112447444 |
| 9 | 1416465537909008 |
| 10 | 86254456382365422 |
| 11 | 5252391281433321840 |
| 12 | 319839870650458477666 |
| 13 | 19476375116903366115612 |
| 14 | 1185997189541765630381252 |
| 15 | 72220283556802506132778356 |
| 16 | 4397792341346509099717980618 |
| 17 | 267799799794395524429805470412 |
| 18 | 16307439552264147863293668460374 |