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 | 0 |
| 2 | 6534 |
| 3 | 65934 |
| 4 | 659934 |
| 5 | 6599934 |
| 6 | 65346534 |
| 7 | 65999934 |
| 8 | 653406534 |
| 9 | 659999934 |
| 10 | 6534006534 |
| 11 | 6593465934 |
| 12 | 6599999934 |
| 13 | 65340006534 |
| 14 | 65934065934 |
| 15 | 65999999934 |
| 16 | 653400006534 |
| 17 | 653465346534 |
| 18 | 659340065934 |
| 19 | 659934659934 |
| 20 | 659999999934 |
| 21 | 6534000006534 |
| 22 | 6534659346534 |
| 23 | 6593400065934 |
| 24 | 6599340659934 |
| 25 | 6599999999934 |