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 | 3 |
| 2 | 54 |
| 3 | 1586 |
| 4 | 45453 |
| 5 | 1258372 |
| 6 | 33934344 |
| 7 | 911404794 |
| 8 | 24751091876 |
| 9 | 685844521863 |
| 10 | 19455144713950 |
| 11 | 564670981724616 |
| 12 | 16727123708223072 |
| 13 | 504154243224589510 |
| 14 | 15415190705591603814 |