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 | 12 |
| 3 | 126 |
| 4 | 42 |
| 5 | 366 |
| 6 | 318 |
| 7 | 762 |
| 8 | 432 |
| 9 | 1278 |
| 10 | 1152 |
| 11 | 1950 |
| 12 | 1338 |
| 13 | 2658 |
| 14 | 2550 |
| 15 | 3642 |
| 16 | 2808 |
| 17 | 4590 |
| 18 | 4500 |
| 19 | 5898 |
| 20 | 4734 |
| 21 | 7086 |
| 22 | 6978 |
| 23 | 8706 |
| 24 | 7344 |
| 25 | 10134 |
| 26 | 9876 |
| 27 | 12066 |
| 28 | 10422 |
| 29 | 13710 |
| 30 | 13374 |
| 31 | 15930 |
| 32 | 14052 |
| 33 | 17850 |
| 34 | 17460 |
| 35 | 20298 |
| 36 | 18222 |
| 37 | 22494 |
| 38 | 22062 |
| 39 | 25206 |
| 40 | 22860 |
| 41 | 27642 |
| 42 | 27216 |