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 | 13 |
| 2 | 169 |
| 3 | 499 |
| 4 | 1602 |
| 5 | 5904 |
| 6 | 18055 |
| 7 | 52240 |
| 8 | 156473 |
| 9 | 460171 |
| 10 | 1324209 |
| 11 | 3824481 |
| 12 | 11017816 |
| 13 | 31464850 |
| 14 | 89582619 |
| 15 | 254431356 |
| 16 | 719347025 |
| 17 | 2026808124 |
| 18 | 5696170867 |
| 19 | 15961932156 |
| 20 | 44610315375 |
| 21 | 124409802922 |
| 22 | 346245984652 |
| 23 | 961805475293 |
| 24 | 2667346798257 |