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) |
|---|---|
| 35 | 4 |
| 36 | 25 |
| 37 | 132 |
| 38 | 473 |
| 39 | 1469 |
| 40 | 4894 |
| 41 | 14744 |
| 42 | 39776 |
| 43 | 105267 |
| 44 | 265094 |
| 45 | 591209 |
| 46 | 1185497 |
| 47 | 2215965 |
| 48 | 3569692 |
| 49 | 4408744 |
| 50 | 3597040 |