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 | 1 |
| 2 | 12 |
| 3 | 108 |
| 4 | 1008 |
| 5 | 10000 |
| 6 | 100008 |
| 7 | 1000041 |
| 8 | 10000000 |
| 9 | 100000008 |
| 10 | 1000000000 |
| 11 | 10000000109 |
| 12 | 100000000080 |
| 13 | 1000000000116 |
| 14 | 10000000000144 |
| 15 | 100000000000125 |
| 16 | 1000000000000000 |
| 17 | 10000000000000152 |
| 18 | 100000000000000008 |