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 | 7 |
| 3 | 17 |
| 4 | 43 |
| 5 | 111 |
| 6 | 245 |
| 7 | 429 |
| 8 | 855 |
| 9 | 1863 |
| 10 | 3573 |
| 11 | 10241 |
| 12 | 30645 |
| 13 | 50043 |
| 14 | 160499 |
| 15 | 149009 |
| 16 | 149121 |
| 17 | 755895 |
| 18 | 3366835 |