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 | 6 |
| 3 | 9 |
| 4 | 154 |
| 5 | 253 |
| 6 | 1114 |
| 7 | 1390 |
| 8 | 2618 |
| 9 | 5611 |
| 10 | 12871 |
| 11 | 15286 |
| 12 | 108609 |
| 13 | 132574 |
| 14 | 164369 |
| 15 | 188484 |