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 | 6 |
| 2 | 66 |
| 3 | 606 |
| 4 | 616 |
| 5 | 626 |
| 6 | 636 |
| 7 | 646 |
| 8 | 656 |
| 9 | 666 |
| 10 | 676 |
| 11 | 686 |
| 12 | 696 |
| 13 | 6006 |
| 14 | 6116 |
| 15 | 6226 |
| 16 | 6336 |
| 17 | 6446 |
| 18 | 6556 |
| 19 | 6666 |
| 20 | 6776 |
| 21 | 6886 |
| 22 | 6996 |
| 23 | 60006 |
| 24 | 60106 |
| 25 | 60206 |
| 26 | 60306 |
| 27 | 60406 |
| 28 | 60506 |
| 29 | 60606 |
| 30 | 60706 |
| 31 | 60806 |
| 32 | 60906 |
| 33 | 61016 |
| 34 | 61116 |
| 35 | 61216 |
| 36 | 61316 |
| 37 | 61416 |
| 38 | 61516 |
| 39 | 61616 |
| 40 | 61716 |
| 41 | 61816 |
| 42 | 61916 |
| 43 | 62026 |