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 | 6 |
| 3 | 66 |
| 4 | 666 |
| 5 | 6441 |
| 6 | 41616 |
| 7 | 146611 |
| 8 | 464166 |
| 9 | 1464616 |
| 10 | 4114146 |
| 11 | 14116641 |
| 12 | 664611111 |
| 13 | 1164441411 |
| 14 | 16646464416 |
| 15 | 41641661166 |
| 16 | 66114661161 |
| 17 | 144161141446 |
| 18 | 161646441166 |
| 19 | 1464464661166 |
| 20 | 4464411144441 |
| 21 | 44416146616416 |
| 22 | 61116114144646 |
| 23 | 466141616644641 |
| 24 | 1116644466666141 |
| 25 | 1161666441164166 |