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 | 1 |
| 2 | 8 |
| 3 | 92 |
| 4 | 1380 |
| 5 | 25488 |
| 6 | 558426 |
| 7 | 14140722 |
| 8 | 406005804 |
| 9 | 13024655442 |
| 10 | 461451524934 |
| 11 | 17886290630832 |
| 12 | 752602671853068 |
| 13 | 34152212772528222 |
| 14 | 1662095923363838817 |
| 15 | 86335146917372644026 |
| 16 | 4766427291743224251474 |
| 17 | 278658370977555551901990 |