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 | 5 |
| 2 | 69 |
| 3 | 1496 |
| 4 | 45771 |
| 5 | 1840537 |
| 6 | 92925982 |
| 7 | 5705543791 |
| 8 | 416015394341 |
| 9 | 35365673566750 |
| 10 | 3454046493504337 |
| 11 | 382930667897753421 |
| 12 | 47708365129614794580 |
| 13 | 6622948820406278058625 |
| 14 | 1016977626656613380728781 |
| 15 | 171637260767262574245781800 |
| 16 | 31661205827344145981298200207 |
| 17 | 6352045190999137085697971335893 |