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) |
|---|---|
| 4 | 1061 |
| 5 | 10061 |
| 6 | 106861 |
| 7 | 1106881 |
| 8 | 10806881 |
| 9 | 100688611 |
| 10 | 1006088861 |
| 11 | 10000169111 |
| 12 | 100006601911 |
| 13 | 1000000810681 |
| 14 | 10000000001161 |
| 15 | 100000010086091 |
| 16 | 1000000006096691 |
| 17 | 10000000001016101 |
| 18 | 100000000069088101 |
| 19 | 1000000000016106811 |
| 20 | 10000000000060088191 |
| 21 | 100000000000008608611 |