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 | 2 |
| 2 | 1 |
| 3 | 6 |
| 4 | 3 |
| 5 | 18 |
| 6 | 9 |
| 7 | 30 |
| 8 | 42 |
| 9 | 78 |
| 10 | 114 |
| 11 | 138 |
| 12 | 87 |
| 13 | 330 |
| 14 | 318 |
| 15 | 189 |
| 16 | 462 |
| 17 | 408 |
| 18 | 504 |
| 19 | 303 |
| 20 | 561 |
| 21 | 1002 |
| 22 | 2040 |
| 23 | 1794 |
| 24 | 1746 |
| 25 | 2418 |
| 26 | 2790 |
| 27 | 1389 |
| 28 | 3894 |
| 29 | 4722 |
| 30 | 6738 |
| 31 | 4077 |
| 32 | 14610 |
| 33 | 14616 |
| 34 | 15294 |
| 35 | 16662 |
| 36 | 18966 |
| 37 | 10641 |
| 38 | 27144 |
| 39 | 26142 |
| 40 | 39360 |
| 41 | 31638 |