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 | 11 |
| 2 | 242 |
| 3 | 7986 |
| 4 | 351384 |
| 5 | 19326120 |
| 6 | 1275523920 |
| 7 | 98215341840 |
| 8 | 8642950081920 |
| 9 | 855652058110080 |
| 10 | 94121726392108800 |
| 11 | 11388728893445164800 |
| 12 | 1503312213934761753600 |
| 13 | 214973646592670930764800 |
| 14 | 33105941575271323337779200 |