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) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 9 |
| 6 | 19 |
| 7 | 34 |
| 8 | 69 |
| 9 | 125 |
| 10 | 251 |
| 11 | 461 |
| 12 | 923 |
| 13 | 1715 |
| 14 | 3431 |
| 15 | 6434 |
| 16 | 12869 |
| 17 | 24309 |
| 18 | 48619 |
| 19 | 92377 |
| 20 | 184755 |
| 21 | 352715 |
| 22 | 705431 |
| 23 | 1352077 |
| 24 | 2704155 |
| 25 | 5200299 |
| 26 | 10400599 |
| 27 | 20058299 |
| 28 | 40116599 |
| 29 | 77558759 |
| 30 | 155117519 |
| 31 | 300540194 |
| 32 | 601080389 |
| 33 | 1166803109 |
| 34 | 2333606219 |
| 35 | 4537567649 |