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 | 1 |
| 2 | 4 |
| 3 | 144 |
| 4 | 441 |
| 5 | 1444 |
| 6 | 115111441 |
| 7 | 1551414544 |
| 8 | 441411414544 |
| 9 | 115414455444544 |
| 10 | 41155551514151451441 |
| 11 | 114515541511151545444 |
| 12 | 5115115541555411411554441 |
| 13 | 5411144145154411455544144144 |