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 | 7 |
| 2 | 107 |
| 3 | 307 |
| 4 | 607 |
| 5 | 907 |
| 6 | 1307 |
| 7 | 1607 |
| 8 | 1907 |
| 9 | 2207 |
| 10 | 2707 |
| 11 | 3307 |
| 12 | 3407 |
| 13 | 3607 |
| 14 | 3907 |
| 15 | 4007 |
| 16 | 4507 |
| 17 | 5107 |
| 18 | 5407 |
| 19 | 5507 |
| 20 | 5807 |
| 21 | 6007 |
| 22 | 6607 |
| 23 | 6907 |
| 24 | 7207 |
| 25 | 7307 |
| 26 | 7507 |
| 27 | 7607 |
| 28 | 7907 |
| 29 | 8707 |
| 30 | 8807 |
| 31 | 9007 |
| 32 | 9907 |
| 33 | 10007 |
| 34 | 10607 |
| 35 | 11807 |
| 36 | 12007 |
| 37 | 12107 |
| 38 | 12907 |
| 39 | 13007 |
| 40 | 13807 |
| 41 | 13907 |
| 42 | 14107 |
| 43 | 14207 |