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 | 5 |
| 2 | 86 |
| 3 | 896 |
| 4 | 8964 |
| 5 | 89984 |
| 6 | 899980 |
| 7 | 8999988 |
| 8 | 89999970 |
| 9 | 899999930 |
| 10 | 8999999960 |
| 11 | 89999999958 |
| 12 | 899999999986 |
| 13 | 8999999999932 |
| 14 | 89999999999936 |
| 15 | 899999999999958 |
| 16 | 8999999999999900 |
| 17 | 89999999999999936 |
| 18 | 899999999999999986 |
| 19 | 8999999999999999958 |
| 20 | 89999999999999999938 |