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 | 65340 |
| 3 | 659340 |
| 4 | 6599340 |
| 5 | 65999340 |
| 6 | 653465340 |
| 7 | 659999340 |
| 8 | 6534065340 |
| 9 | 6599999340 |
| 10 | 65340065340 |
| 11 | 65934659340 |
| 12 | 65999999340 |
| 13 | 653400065340 |
| 14 | 659340659340 |
| 15 | 659999999340 |
| 16 | 6534000065340 |
| 17 | 6534653465340 |
| 18 | 6593400659340 |
| 19 | 6599346599340 |
| 20 | 6599999999340 |