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 | 8 |
| 2 | 64 |
| 3 | 512 |
| 4 | 4089 |
| 5 | 32600 |
| 6 | 259476 |
| 7 | 2061940 |
| 8 | 16359580 |
| 9 | 129599404 |
| 10 | 1025145474 |
| 11 | 8097221352 |
| 12 | 63866100432 |
| 13 | 503041727344 |
| 14 | 3956869283864 |
| 15 | 31083352671872 |
| 16 | 243863266575744 |
| 17 | 1910824354782112 |
| 18 | 14954229427038576 |
| 19 | 116893085869240608 |