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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 10 |
| 5 | 37 |
| 6 | 147 |
| 7 | 637 |
| 8 | 2823 |
| 9 | 13020 |
| 10 | 60649 |
| 11 | 286549 |
| 12 | 1364667 |
| 13 | 6547108 |
| 14 | 31586568 |