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 | 32 |
| 3 | 610 |
| 4 | 9842 |
| 5 | 147798 |
| 6 | 2145600 |
| 7 | 30664890 |
| 8 | 435668420 |
| 9 | 6186432967 |
| 10 | 88066807556 |
| 11 | 1258885297696 |
| 12 | 18084694597452 |
| 13 | 261164661944060 |
| 14 | 3791317346771584 |
| 15 | 55316720239735242 |
| 16 | 810944384733610356 |