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) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 30 |
| 4 | 60 |
| 5 | 138 |
| 6 | 180 |
| 7 | 240 |
| 8 | 420 |
| 9 | 618 |
| 10 | 1050 |
| 11 | 1608 |
| 12 | 1698 |
| 13 | 1788 |
| 14 | 2268 |
| 15 | 2310 |
| 16 | 2730 |
| 17 | 3258 |
| 18 | 3390 |
| 19 | 3528 |
| 20 | 3768 |
| 21 | 4158 |
| 22 | 4218 |
| 23 | 4338 |
| 24 | 4800 |
| 25 | 5640 |
| 26 | 5868 |
| 27 | 6660 |
| 28 | 6690 |
| 29 | 6870 |
| 30 | 6960 |
| 31 | 7488 |
| 32 | 7548 |
| 33 | 7590 |
| 34 | 8538 |
| 35 | 8628 |
| 36 | 8970 |
| 37 | 9630 |
| 38 | 9858 |
| 39 | 9930 |
| 40 | 10458 |
| 41 | 11118 |
| 42 | 11970 |
| 43 | 12540 |
| 44 | 13338 |