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 | 0 |
| 1 | 1 |
| 2 | 36 |
| 3 | 1261 |
| 4 | 44136 |
| 5 | 1544761 |
| 6 | 54066636 |
| 7 | 1892332261 |
| 8 | 66231629136 |
| 9 | 2318107019761 |
| 10 | 81133745691636 |
| 11 | 2839681099207261 |
| 12 | 99388838472254136 |
| 13 | 3478609346528894761 |
| 14 | 121751327128511316636 |
| 15 | 4261296449497896082261 |
| 16 | 149145375732426362879136 |
| 17 | 5220088150634922700769761 |