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 | 4 |
| 3 | 11 |
| 4 | 27 |
| 5 | 62 |
| 6 | 138 |
| 7 | 300 |
| 8 | 643 |
| 9 | 1363 |
| 10 | 2866 |
| 11 | 5988 |
| 12 | 12448 |
| 13 | 25770 |
| 14 | 53168 |
| 15 | 109381 |
| 16 | 224481 |
| 17 | 459742 |
| 18 | 939872 |
| 19 | 1918418 |
| 20 | 3910398 |
| 21 | 7961064 |
| 22 | 16190194 |
| 23 | 32893738 |
| 24 | 66772387 |
| 25 | 135437649 |
| 26 | 274518868 |
| 27 | 556061298 |
| 28 | 1125679616 |
| 29 | 2277559414 |
| 30 | 4605810806 |
| 31 | 9309804278 |
| 32 | 18809961926 |