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 | 29 |
| 4 | 79 |
| 5 | 97 |
| 6 | 227 |
| 7 | 229 |
| 8 | 277 |
| 9 | 727 |
| 10 | 797 |
| 11 | 929 |
| 12 | 977 |
| 13 | 997 |
| 14 | 2297 |
| 15 | 2729 |
| 16 | 2777 |
| 17 | 2797 |
| 18 | 2927 |
| 19 | 2999 |
| 20 | 7229 |
| 21 | 7297 |
| 22 | 7727 |
| 23 | 7927 |
| 24 | 9227 |
| 25 | 9277 |
| 26 | 9929 |
| 27 | 22229 |
| 28 | 22277 |
| 29 | 22279 |
| 30 | 22727 |
| 31 | 22777 |
| 32 | 27277 |
| 33 | 27299 |
| 34 | 27779 |
| 35 | 27799 |
| 36 | 27997 |
| 37 | 29297 |
| 38 | 29927 |
| 39 | 72227 |
| 40 | 72229 |
| 41 | 72277 |
| 42 | 72727 |
| 43 | 72797 |