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 | 5 |
| 4 | 23 |
| 5 | 39 |
| 6 | 181 |
| 7 | 307 |
| 8 | 1425 |
| 9 | 2417 |
| 10 | 11219 |
| 11 | 19029 |
| 12 | 88327 |
| 13 | 149815 |
| 14 | 695397 |
| 15 | 1179491 |
| 16 | 5474849 |
| 17 | 9286113 |
| 18 | 43103395 |
| 19 | 73109413 |
| 20 | 339352311 |
| 21 | 575589191 |
| 22 | 2671715093 |
| 23 | 4531604115 |
| 24 | 21034368433 |
| 25 | 35677243729 |
| 26 | 165603232371 |
| 27 | 280886345717 |
| 28 | 1303791490535 |
| 29 | 2211413522007 |