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 | 17 |
| 2 | 227 |
| 3 | 1117 |
| 4 | 11117 |
| 5 | 333337 |
| 6 | 1000051000051000051000051000051000057 |
| 7 | 11111117 |
| 8 | 222222227 |
| 9 | 4444444447 |
| 10 | 66666666667 |
| 11 | 888888888887 |
| 12 | 1000101000101000101000101000101000101000101000101000101000101000101000107 |
| 13 | 191919191919191919191919197 |
| 14 | 222222222222227 |