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 | 2 |
| 3 | 10 |
| 4 | 14 |
| 5 | 22 |
| 6 | 38 |
| 7 | 70 |
| 8 | 134 |
| 9 | 138 |
| 10 | 170 |
| 11 | 190 |
| 12 | 210 |
| 13 | 318 |
| 14 | 426 |
| 15 | 1398 |
| 16 | 4170 |
| 17 | 6870 |
| 18 | 8454 |
| 19 | 19866 |
| 20 | 22470 |
| 21 | 36282 |
| 22 | 38370 |
| 23 | 70770 |
| 24 | 84774 |
| 25 | 98790 |
| 26 | 132990 |
| 27 | 474642 |
| 28 | 705990 |
| 29 | 961650 |