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 | 22 |
| 2 | 1650 |
| 3 | 20240 |
| 4 | 118280 |
| 5 | 462234 |
| 6 | 1402934 |
| 7 | 3579520 |
| 8 | 8046928 |
| 9 | 16426926 |
| 10 | 31082698 |
| 11 | 55316976 |
| 12 | 93593720 |
| 13 | 151783346 |
| 14 | 237431502 |
| 15 | 360051392 |
| 16 | 531439648 |
| 17 | 766015750 |
| 18 | 1081184994 |
| 19 | 1497725008 |
| 20 | 2040195816 |
| 21 | 2737373450 |
| 22 | 3622707110 |
| 23 | 4734799872 |