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 | 10 |
| 3 | 56 |
| 4 | 230 |
| 5 | 759 |
| 6 | 2112 |
| 7 | 5104 |
| 8 | 10912 |
| 9 | 20880 |
| 10 | 35972 |
| 11 | 55768 |
| 12 | 77152 |
| 13 | 93538 |
| 14 | 96396 |
| 15 | 80572 |
| 16 | 50808 |
| 17 | 21302 |
| 18 | 4412 |