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 | 9 |
| 2 | 10 |
| 3 | 34 |
| 4 | 109 |
| 5 | 314 |
| 6 | 334 |
| 7 | 1090 |
| 8 | 3334 |
| 9 | 33334 |
| 10 | 141109 |
| 11 | 333334 |
| 12 | 436909 |
| 13 | 3333334 |
| 14 | 4369314 |
| 15 | 31609965 |
| 16 | 33166234 |
| 17 | 33333334 |
| 18 | 333333334 |
| 19 | 3333333334 |
| 20 | 3464100314 |
| 21 | 33316662334 |
| 22 | 33333333334 |
| 23 | 104828011090 |
| 24 | 301512701090 |
| 25 | 333333333334 |