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 | 2 |
| 2 | 10 |
| 3 | 34 |
| 4 | 106 |
| 5 | 1666 |
| 6 | 8746 |
| 7 | 26242 |
| 8 | 134946 |
| 9 | 2125762 |
| 10 | 3997714 |
| 11 | 8298346 |
| 12 | 156057642 |
| 13 | 323814834 |
| 14 | 672166026 |
| 15 | 3901441050 |