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 | 62 |
| 2 | 8342 |
| 3 | 1269900 |
| 4 | 198253934 |
| 5 | 31111319376 |
| 6 | 4887323351972 |
| 7 | 767919868804309 |
| 8 | 120664440361104580 |
| 9 | 18960353496615710993 |
| 10 | 2979300461790704311162 |
| 11 | 468147088780110777732830 |
| 12 | 73561466714064126023807694 |
| 13 | 11558951424929920406557632356 |
| 14 | 1816295465197137076501207582877 |