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 | 61 |
| 2 | 16166611 |
| 3 | 16616161 |
| 4 | 61116661 |
| 5 | 61661161 |
| 6 | 66161611 |
| 7 | 1166116661 |
| 8 | 1166166161 |
| 9 | 1166166611 |
| 10 | 1166616161 |
| 11 | 1616616611 |
| 12 | 1661116661 |
| 13 | 6111166661 |
| 14 | 6111666611 |
| 15 | 6116116661 |
| 16 | 6161161661 |
| 17 | 6161166161 |
| 18 | 6161166611 |
| 19 | 6161661161 |
| 20 | 6166111661 |
| 21 | 6166161161 |
| 22 | 6611616611 |
| 23 | 6616161161 |
| 24 | 6616161611 |