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 | 19 |
| 3 | 61 |
| 4 | 191 |
| 5 | 199 |
| 6 | 619 |
| 7 | 661 |
| 8 | 691 |
| 9 | 911 |
| 10 | 919 |
| 11 | 991 |
| 12 | 1619 |
| 13 | 1669 |
| 14 | 1699 |
| 15 | 1999 |
| 16 | 6199 |
| 17 | 6619 |
| 18 | 6661 |
| 19 | 6691 |
| 20 | 6911 |
| 21 | 6961 |
| 22 | 6991 |
| 23 | 9161 |
| 24 | 9199 |
| 25 | 9619 |
| 26 | 9661 |
| 27 | 11119 |
| 28 | 11161 |
| 29 | 11699 |
| 30 | 11969 |
| 31 | 16111 |
| 32 | 16619 |
| 33 | 16661 |
| 34 | 16691 |
| 35 | 16699 |
| 36 | 19661 |
| 37 | 19699 |
| 38 | 19919 |
| 39 | 19961 |
| 40 | 19991 |
| 41 | 61169 |
| 42 | 61961 |