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) |
|---|---|
| 5 | 1 |
| 6 | 26 |
| 7 | 460 |
| 8 | 7064 |
| 9 | 102510 |
| 10 | 1462680 |
| 11 | 20971656 |
| 12 | 306191550 |
| 13 | 4593023012 |
| 14 | 71238398197 |
| 15 | 1147853638792 |