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 | 0 |
| 2 | 0 |
| 3 | 8 |
| 4 | 42 |
| 5 | 72 |
| 6 | 240 |
| 7 | 240 |
| 8 | 630 |
| 9 | 728 |
| 10 | 1296 |
| 11 | 1080 |
| 12 | 3080 |
| 13 | 1848 |
| 14 | 3744 |
| 15 | 4368 |
| 16 | 6510 |
| 17 | 4320 |
| 18 | 10608 |
| 19 | 6120 |
| 20 | 14364 |
| 21 | 12160 |
| 22 | 15120 |
| 23 | 11088 |
| 24 | 30360 |
| 25 | 17112 |
| 26 | 25200 |
| 27 | 26000 |
| 28 | 39312 |
| 29 | 22680 |
| 30 | 58464 |
| 31 | 27840 |
| 32 | 58590 |
| 33 | 47616 |
| 34 | 57024 |
| 35 | 53856 |
| 36 | 108290 |
| 37 | 47880 |
| 38 | 79920 |
| 39 | 78736 |
| 40 | 133380 |
| 41 | 65520 |
| 42 | 157440 |