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 | 6 |
| 2 | 39 |
| 3 | 60 |
| 4 | 210 |
| 5 | 210 |
| 6 | 410 |
| 7 | 630 |
| 8 | 915 |
| 9 | 1320 |
| 10 | 1780 |
| 11 | 2340 |
| 12 | 990 |
| 13 | 2730 |
| 14 | 3164 |
| 15 | 4620 |
| 16 | 5215 |
| 17 | 5610 |
| 18 | 4290 |
| 19 | 8145 |
| 20 | 8106 |
| 21 | 2730 |
| 22 | 6630 |
| 23 | 12116 |
| 24 | 12540 |
| 25 | 4080 |
| 26 | 17485 |
| 27 | 17451 |
| 28 | 18480 |
| 29 | 9690 |
| 30 | 24414 |