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 | 30 |
| 3 | 116 |
| 4 | 42 |
| 5 | 456 |
| 6 | 780 |
| 7 | 1140 |
| 8 | 1368 |
| 9 | 1380 |
| 10 | 3420 |
| 11 | 4356 |
| 12 | 5104 |
| 13 | 20196 |
| 14 | 9396 |
| 15 | 1980 |
| 16 | 15876 |
| 17 | 8316 |
| 18 | 4860 |
| 19 | 16380 |
| 20 | 79464 |
| 21 | 239976 |
| 22 | 15720 |
| 23 | 69300 |
| 24 | 129960 |
| 25 | 70000 |
| 26 | 90360 |
| 27 | 141680 |
| 28 | 263160 |
| 29 | 835380 |
| 30 | 802296 |
| 31 | 706680 |
| 32 | 236808 |
| 33 | 39960 |
| 34 | 205800 |
| 35 | 2898840 |
| 36 | 3200904 |
| 37 | 598920 |
| 38 | 664440 |
| 39 | 2723400 |