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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 13 |
| 7 | 32 |
| 8 | 51 |
| 9 | 76 |
| 10 | 161 |
| 11 | 386 |
| 12 | 903 |
| 13 | 2280 |
| 14 | 5018 |
| 15 | 12828 |
| 16 | 19720 |
| 17 | 27656 |
| 18 | 48788 |
| 19 | 100120 |
| 20 | 220686 |
| 21 | 537208 |
| 22 | 1258242 |
| 23 | 3123166 |
| 24 | 7056165 |
| 25 | 17189752 |
| 26 | 35968308 |
| 27 | 82137764 |
| 28 | 189847917 |
| 29 | 509880208 |
| 30 | 1322092262 |
| 31 | 3807727932 |
| 32 | 5678509066 |
| 33 | 7721623440 |
| 34 | 13293899416 |
| 35 | 23650787296 |