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 | 23 |
| 2 | 361 |
| 3 | 4907 |
| 4 | 62545 |
| 5 | 773171 |
| 6 | 9415897 |
| 7 | 113824139 |
| 8 | 1370909089 |
| 9 | 16481083619 |
| 10 | 197954225833 |
| 11 | 2376538571771 |
| 12 | 28524991618033 |
| 13 | 342339076723667 |
| 14 | 4108303998843769 |
| 15 | 49301058498065003 |
| 16 | 591621165177427777 |