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 | 1152 |
| 4 | 5371 |
| 5 | 30160 |
| 6 | 177488 |
| 7 | 1103081 |
| 8 | 6990922 |
| 9 | 45002090 |
| 10 | 291703403 |
| 11 | 1899852502 |
| 12 | 12403724792 |
| 13 | 81108030137 |
| 14 | 530824116234 |
| 15 | 3475943478340 |
| 16 | 22768311915069 |
| 17 | 149167204090078 |
| 18 | 977385748598970 |
| 19 | 6404564660109105 |