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) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 144 |
| 3 | 1156 |
| 4 | 11664 |
| 5 | 118336 |
| 6 | 1218816 |
| 7 | 12574116 |
| 8 | 129868816 |
| 9 | 1341610384 |
| 10 | 13860823824 |
| 11 | 143206237476 |
| 12 | 1479580304400 |
| 13 | 15286786268224 |
| 14 | 157940749232704 |
| 15 | 1631820172890436 |
| 16 | 16859722986240016 |
| 17 | 174192150898142224 |
| 18 | 1799727414404326416 |
| 19 | 18594516209802790084 |