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 | 3 |
| 3 | 79 |
| 4 | 235 |
| 5 | 431 |
| 6 | 1503 |
| 7 | 2943 |
| 8 | 6059 |
| 9 | 6619 |
| 10 | 18911 |
| 11 | 54223 |
| 12 | 302467995 |
| 13 | 1772665631 |
| 14 | 2148845167 |
| 15 | 5145362667 |
| 16 | 129465909327 |
| 17 | 212089391807 |