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 | 2 |
| 2 | 7 |
| 3 | 67 |
| 4 | 227 |
| 5 | 277 |
| 6 | 677 |
| 7 | 727 |
| 8 | 2267 |
| 9 | 2677 |
| 10 | 2767 |
| 11 | 2777 |
| 12 | 6277 |
| 13 | 7727 |
| 14 | 22277 |
| 15 | 22727 |
| 16 | 22777 |
| 17 | 26227 |
| 18 | 26267 |
| 19 | 26627 |
| 20 | 26777 |
| 21 | 27277 |
| 22 | 27767 |
| 23 | 62627 |
| 24 | 67777 |
| 25 | 72227 |
| 26 | 72277 |
| 27 | 72727 |
| 28 | 72767 |
| 29 | 76667 |
| 30 | 76777 |
| 31 | 77267 |
| 32 | 226267 |
| 33 | 226777 |
| 34 | 227267 |
| 35 | 227627 |
| 36 | 262627 |
| 37 | 266677 |
| 38 | 266767 |
| 39 | 267227 |