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) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 110 |
| 3 | 1100 |
| 4 | 10945 |
| 5 | 108900 |
| 6 | 1083555 |
| 7 | 10781100 |
| 8 | 107269470 |
| 9 | 1067306625 |
| 10 | 10619454780 |
| 11 | 105661128375 |
| 12 | 1051303881870 |
| 13 | 10460231387100 |
| 14 | 104076892111005 |
| 15 | 1035541095642900 |
| 16 | 10303395297584895 |
| 17 | 102516409155629700 |
| 18 | 1020014649794722230 |
| 19 | 10148910738927500925 |