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 | 1 |
| 2 | 3 |
| 3 | 11 |
| 4 | 29 |
| 5 | 49 |
| 6 | 91 |
| 7 | 419 |
| 8 | 429 |
| 9 | 715 |
| 10 | 5135 |
| 11 | 12597 |
| 12 | 30039 |
| 13 | 68495 |
| 14 | 111419 |
| 15 | 766935 |
| 16 | 5272635 |
| 17 | 5892945 |
| 18 | 10855403 |
| 19 | 11475735 |
| 20 | 34427183 |
| 21 | 200476075 |
| 22 | 879640007 |
| 23 | 879640035 |
| 24 | 5987618721 |
| 25 | 9464300527 |
| 26 | 13456046341 |
| 27 | 33028477461 |
| 28 | 85307470993 |