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 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 30 |
| 5 | 42 |
| 6 | 210 |
| 7 | 330 |
| 8 | 390 |
| 9 | 462 |
| 10 | 510 |
| 11 | 546 |
| 12 | 714 |
| 13 | 798 |
| 14 | 2310 |
| 15 | 2730 |
| 16 | 3570 |
| 17 | 3990 |
| 18 | 4290 |
| 19 | 4830 |
| 20 | 5610 |
| 21 | 6006 |
| 22 | 6090 |
| 23 | 6270 |
| 24 | 6510 |
| 25 | 6630 |
| 26 | 7410 |
| 27 | 7590 |
| 28 | 7854 |
| 29 | 8778 |
| 30 | 8970 |
| 31 | 9282 |
| 32 | 9570 |
| 33 | 9690 |
| 34 | 10230 |
| 35 | 10374 |
| 36 | 10626 |
| 37 | 11310 |
| 38 | 11730 |
| 39 | 12090 |
| 40 | 12210 |
| 41 | 12558 |
| 42 | 13398 |
| 43 | 13566 |
| 44 | 14322 |
| 45 | 14430 |