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 | 0 |
| 1 | 5 |
| 2 | 65 |
| 3 | 665 |
| 4 | 6305 |
| 5 | 58025 |
| 6 | 527345 |
| 7 | 4766585 |
| 8 | 42981185 |
| 9 | 387158345 |
| 10 | 3485735825 |
| 11 | 31376865305 |
| 12 | 282412759265 |
| 13 | 2541798719465 |
| 14 | 22876524019505 |
| 15 | 205890058352825 |
| 16 | 1853015893884545 |
| 17 | 16677164519797385 |
| 18 | 150094566577522385 |
| 19 | 1350851442795085145 |
| 20 | 12157664359545301025 |
| 21 | 109418984733465848105 |
| 22 | 984770884591425188465 |