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 | 11 |
| 2 | 101 |
| 3 | 181 |
| 4 | 191 |
| 5 | 919 |
| 6 | 10601 |
| 7 | 11411 |
| 8 | 16061 |
| 9 | 16661 |
| 10 | 18181 |
| 11 | 18481 |
| 12 | 19891 |
| 13 | 19991 |
| 14 | 91019 |
| 15 | 94049 |
| 16 | 94649 |
| 17 | 94849 |
| 18 | 94949 |
| 19 | 96469 |
| 20 | 98689 |
| 21 | 1008001 |
| 22 | 1114111 |
| 23 | 1160611 |
| 24 | 1180811 |
| 25 | 1186811 |
| 26 | 1190911 |
| 27 | 1196911 |
| 28 | 1409041 |
| 29 | 1411141 |
| 30 | 1444441 |
| 31 | 1461641 |