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 | 6 |
| 2 | 36 |
| 3 | 161 |
| 4 | 581 |
| 5 | 1847 |
| 6 | 5615 |
| 7 | 17487 |
| 8 | 57303 |
| 9 | 194064 |
| 10 | 659418 |
| 11 | 2212695 |
| 12 | 7329603 |
| 13 | 24138450 |
| 14 | 79571792 |
| 15 | 263302273 |
| 16 | 873867641 |
| 17 | 2902730184 |
| 18 | 9635417630 |
| 19 | 31950864559 |
| 20 | 105883279595 |
| 21 | 350872561227 |
| 22 | 1163005850963 |
| 23 | 3855906404239 |
| 24 | 12785544028311 |