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 | 42 |
| 2 | 1764 |
| 3 | 1728 |
| 4 | 5436 |
| 5 | 13806 |
| 6 | 37430 |
| 7 | 111328 |
| 8 | 286754 |
| 9 | 844200 |
| 10 | 2336928 |
| 11 | 6407688 |
| 12 | 18684540 |
| 13 | 50681028 |
| 14 | 145645192 |
| 15 | 408090270 |
| 16 | 1135228896 |
| 17 | 3261392100 |
| 18 | 8999952300 |
| 19 | 25648313760 |
| 20 | 72191962584 |
| 21 | 201563085152 |
| 22 | 574718422958 |
| 23 | 1602200548928 |