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 | 4 |
| 3 | 32 |
| 4 | 318 |
| 5 | 3692 |
| 6 | 47536 |
| 7 | 657040 |
| 8 | 9563961 |
| 9 | 144847330 |
| 10 | 2263567060 |
| 11 | 36281911266 |
| 12 | 593856894136 |
| 13 | 9892591942306 |
| 14 | 167278802007062 |
| 15 | 2865331941321996 |
| 16 | 49634901816988932 |
| 17 | 868329574365547207 |