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 | 3 |
| 3 | 10 |
| 4 | 12 |
| 5 | 52 |
| 6 | 188 |
| 7 | 1175 |
| 8 | 4840 |
| 9 | 25168 |
| 10 | 90992 |
| 11 | 896368 |
| 12 | 8164112 |
| 13 | 30997008 |
| 14 | 233151408 |
| 15 | 2111839632 |