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 | 3 |
| 4 | 7 |
| 5 | 8 |
| 6 | 21 |
| 7 | 22 |
| 8 | 63 |
| 9 | 64 |
| 10 | 195 |
| 11 | 196 |
| 12 | 624 |
| 13 | 625 |
| 14 | 2054 |
| 15 | 2055 |
| 16 | 6916 |
| 17 | 6917 |
| 18 | 23712 |
| 19 | 23713 |
| 20 | 82498 |
| 21 | 82499 |
| 22 | 290510 |
| 23 | 290511 |
| 24 | 1033410 |
| 25 | 1033411 |
| 26 | 3707850 |
| 27 | 3707851 |
| 28 | 13402695 |
| 29 | 13402696 |
| 30 | 48760365 |
| 31 | 48760366 |
| 32 | 178405155 |
| 33 | 178405156 |
| 34 | 656043855 |
| 35 | 656043856 |
| 36 | 2423307045 |