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 | 8 |
| 2 | 136 |
| 3 | 2960 |
| 4 | 73000 |
| 5 | 1941488 |
| 6 | 54308944 |
| 7 | 1575042848 |
| 8 | 46933604200 |
| 9 | 1428339725360 |
| 10 | 44208223638256 |
| 11 | 1387283904693728 |
| 12 | 44037051952177936 |
| 13 | 1411537432519587680 |
| 14 | 45622957237070603680 |
| 15 | 1485278571381185936960 |