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 | 16 |
| 2 | 256 |
| 3 | 704 |
| 4 | 1936 |
| 5 | 7744 |
| 6 | 30976 |
| 7 | 111584 |
| 8 | 401956 |
| 9 | 1513992 |
| 10 | 5702544 |
| 11 | 20899776 |
| 12 | 76597504 |
| 13 | 286890560 |
| 14 | 1074528400 |
| 15 | 3949990000 |
| 16 | 14520250000 |
| 17 | 54270790000 |
| 18 | 202842144400 |
| 19 | 746941718600 |
| 20 | 2750522740900 |
| 21 | 10264894414720 |
| 22 | 38308375269376 |