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 | 225 |
| 4 | 3721 |
| 5 | 7225 |
| 6 | 13225 |
| 7 | 19321 |
| 8 | 27225 |
| 9 | 35721 |
| 10 | 319225 |
| 11 | 55225 |
| 12 | 57121 |
| 13 | 511225 |
| 14 | 112225 |
| 15 | 133225 |
| 16 | 172225 |
| 17 | 17131321 |
| 18 | 192721 |
| 19 | 235225 |
| 20 | 212521 |
| 21 | 2217121 |
| 22 | 235225 |
| 23 | 373321 |
| 24 | 3115225 |
| 25 | 317231721 |
| 26 | 32319225 |
| 27 | 511225 |
| 28 | 5112121 |
| 29 | 1125721 |
| 30 | 11323225 |