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 | 46464 |
| 3 | 48384 |
| 4 | 63336 |
| 5 | 65856 |
| 6 | 66066 |
| 7 | 474474 |
| 8 | 666666 |
| 9 | 4053504 |
| 10 | 4228224 |
| 11 | 4244424 |
| 12 | 4383834 |
| 13 | 4405044 |
| 14 | 6693966 |
| 15 | 42066024 |
| 16 | 42455424 |
| 17 | 42666624 |
| 18 | 43177134 |
| 19 | 48455484 |
| 20 | 49899894 |
| 21 | 60366306 |
| 22 | 480333084 |
| 23 | 610262016 |
| 24 | 656161656 |
| 25 | 4242662424 |
| 26 | 4365995634 |
| 27 | 4409449044 |
| 28 | 4475775744 |