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) |
|---|---|
| 54 | 0 |
| 55 | 3 |
| 56 | 17 |
| 57 | 66 |
| 58 | 189 |
| 59 | 589 |
| 60 | 1677 |
| 61 | 3829 |
| 62 | 7948 |
| 63 | 15649 |
| 64 | 25543 |
| 65 | 26931 |
| 66 | 15472 |