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 | 10123465789 |
| 2 | 10123685749 |
| 3 | 10123746859 |
| 4 | 10123854679 |
| 5 | 10123945687 |
| 6 | 10123956487 |
| 7 | 10124356789 |
| 8 | 10124378569 |
| 9 | 10124563987 |
| 10 | 10124568793 |
| 11 | 10124683759 |
| 12 | 10124695783 |
| 13 | 10124736859 |
| 14 | 10124763589 |
| 15 | 10124785639 |
| 16 | 10124867539 |
| 17 | 10124867593 |
| 18 | 10124935687 |
| 19 | 10125367849 |
| 20 | 10125368749 |