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 | 25 |
| 3 | 121 |
| 4 | 225 |
| 5 | 1225 |
| 6 | 1521 |
| 7 | 55225 |
| 8 | 112225 |
| 9 | 212521 |
| 10 | 511225 |
| 11 | 1525225 |
| 12 | 2512225 |
| 13 | 5112121 |
| 14 | 5221225 |
| 15 | 11122225 |
| 16 | 152152225 |
| 17 | 1111222225 |
| 18 | 1155252121 |
| 19 | 1222551225 |
| 20 | 5225121225 |
| 21 | 15211522225 |
| 22 | 111112222225 |
| 23 | 1212225222121 |
| 24 | 1521115222225 |
| 25 | 11111122222225 |
| 26 | 122212251151225 |
| 27 | 152111152222225 |