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) |
|---|---|
| 2 | 1 |
| 3 | 16 |
| 4 | 1 |
| 5 | 400 |
| 6 | 52 |
| 7 | 1 |
| 8 | 14400 |
| 9 | 2948 |
| 10 | 116 |
| 11 | 1 |
| 12 | 705600 |
| 13 | 203072 |
| 14 | 12344 |
| 15 | 216 |
| 16 | 1 |
| 17 | 45158400 |
| 18 | 17154432 |
| 19 | 1437472 |
| 20 | 38480 |
| 21 | 360 |
| 22 | 1 |
| 23 | 3657830400 |
| 24 | 1760601600 |
| 25 | 191088544 |
| 26 | 6978592 |
| 27 | 99320 |
| 28 | 556 |
| 29 | 1 |
| 30 | 365783040000 |
| 31 | 216690624000 |
| 32 | 29277351936 |
| 33 | 1370470592 |
| 34 | 26445312 |
| 35 | 224420 |
| 36 | 812 |
| 37 | 1 |