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 | 1 |
| 2 | 12 |
| 3 | 264 |
| 4 | 8448 |
| 5 | 354816 |
| 6 | 18450432 |
| 7 | 1143926784 |
| 8 | 82362728448 |
| 9 | 6753743732736 |
| 10 | 621344423411712 |
| 11 | 63377131187994624 |
| 12 | 7098238693055397888 |
| 13 | 865985120552758542336 |
| 14 | 114310035912964127588352 |
| 15 | 16232025099640906117545984 |
| 16 | 2467267815145417729866989568 |
| 17 | 399697386053557672238452310016 |