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 | 12 |
| 2 | 18 |
| 3 | 30 |
| 4 | 42 |
| 5 | 102 |
| 6 | 138 |
| 7 | 282 |
| 8 | 618 |
| 9 | 642 |
| 10 | 822 |
| 11 | 1698 |
| 12 | 1878 |
| 13 | 2082 |
| 14 | 2238 |
| 15 | 2382 |
| 16 | 2658 |
| 17 | 2802 |
| 18 | 3462 |
| 19 | 3558 |
| 20 | 3918 |
| 21 | 4638 |
| 22 | 4722 |
| 23 | 5442 |
| 24 | 6198 |
| 25 | 6702 |
| 26 | 8538 |
| 27 | 8598 |
| 28 | 9678 |
| 29 | 10938 |
| 30 | 12162 |
| 31 | 12378 |
| 32 | 12822 |
| 33 | 12918 |
| 34 | 13218 |
| 35 | 13722 |
| 36 | 13758 |
| 37 | 13998 |
| 38 | 14082 |
| 39 | 16062 |
| 40 | 17418 |
| 41 | 19542 |