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 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 4 |
| 7 | 12 |
| 8 | 37 |
| 9 | 95 |
| 10 | 232 |
| 11 | 533 |
| 12 | 1198 |
| 13 | 2613 |
| 14 | 5619 |
| 15 | 11915 |
| 16 | 25011 |
| 17 | 52064 |
| 18 | 107694 |
| 19 | 221558 |
| 20 | 453850 |
| 21 | 926309 |
| 22 | 1884942 |
| 23 | 3825968 |
| 24 | 7749312 |
| 25 | 15667596 |
| 26 | 31628516 |
| 27 | 63766109 |
| 28 | 128415848 |
| 29 | 258365323 |
| 30 | 519392582 |
| 31 | 1043405306 |
| 32 | 2094829709 |
| 33 | 4203577778 |
| 34 | 8431313237 |
| 35 | 16904555958 |