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 | 5 |
| 3 | 12 |
| 4 | 72 |
| 5 | 390 |
| 6 | 2606 |
| 7 | 17771 |
| 8 | 128598 |
| 9 | 950292 |
| 10 | 7180767 |
| 11 | 55056590 |
| 12 | 427567892 |
| 13 | 3354737555 |
| 14 | 26555548849 |