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 | 0 |
| 2 | 5 |
| 3 | 89 |
| 4 | 532 |
| 5 | 1970 |
| 6 | 5513 |
| 7 | 12872 |
| 8 | 26477 |
| 9 | 49598 |
| 10 | 86465 |
| 11 | 142388 |
| 12 | 223877 |
| 13 | 338762 |
| 14 | 496313 |
| 15 | 707360 |
| 16 | 984413 |
| 17 | 1341782 |
| 18 | 1795697 |
| 19 | 2364428 |
| 20 | 3068405 |
| 21 | 3930338 |
| 22 | 4975337 |
| 23 | 6231032 |
| 24 | 7727693 |
| 25 | 9498350 |
| 26 | 11578913 |
| 27 | 14008292 |
| 28 | 16828517 |
| 29 | 20084858 |
| 30 | 23825945 |