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) |
|---|---|
| 4 | 64 |
| 5 | 625 |
| 6 | 4016 |
| 7 | 21256 |
| 8 | 100407 |
| 9 | 439646 |
| 10 | 1823298 |
| 11 | 7258228 |
| 12 | 27983518 |
| 13 | 105146732 |
| 14 | 386812476 |
| 15 | 1398023732 |
| 16 | 4977320988 |
| 17 | 17492710572 |
| 18 | 60790051789 |
| 19 | 209179971147 |
| 20 | 713533304668 |
| 21 | 2415061934763 |
| 22 | 8117293752058 |
| 23 | 27111950991825 |
| 24 | 90039381031273 |