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 | 3 |
| 2 | 19 |
| 3 | 631 |
| 4 | 1303 |
| 5 | 6571 |
| 6 | 14653 |
| 7 | 20749 |
| 8 | 38431 |
| 9 | 331801 |
| 10 | 457003 |
| 11 | 1048609 |
| 12 | 1679653 |
| 13 | 3748141 |
| 14 | 4879729 |
| 15 | 12960061 |
| 16 | 22667191 |
| 17 | 26873929 |
| 18 | 29986651 |
| 19 | 35153119 |
| 20 | 62742331 |
| 21 | 65610091 |
| 22 | 108243319 |
| 23 | 131079709 |
| 24 | 200534041 |
| 25 | 252047503 |
| 26 | 294500053 |
| 27 | 454372003 |
| 28 | 466949029 |
| 29 | 639129121 |