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 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 4 |
| 8 | 7 |
| 9 | 18 |
| 10 | 36 |
| 11 | 66 |
| 12 | 157 |
| 13 | 329 |
| 14 | 728 |
| 15 | 1611 |
| 16 | 3655 |
| 17 | 8062 |
| 18 | 18154 |
| 19 | 40358 |
| 20 | 89807 |
| 21 | 199778 |
| 22 | 444419 |
| 23 | 984422 |
| 24 | 2183461 |
| 25 | 4827756 |
| 26 | 10651083 |
| 27 | 23465459 |
| 28 | 51576034 |
| 29 | 113092423 |
| 30 | 247546849 |
| 31 | 540538832 |
| 32 | 1177836149 |
| 33 | 2560897979 |
| 34 | 5555722749 |
| 35 | 12025952101 |
| 36 | 25976048200 |