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 | 666 |
| 2 | 1666 |
| 3 | 2666 |
| 4 | 3666 |
| 5 | 4666 |
| 6 | 5666 |
| 7 | 6066 |
| 8 | 6166 |
| 9 | 6266 |
| 10 | 6366 |
| 11 | 6466 |
| 12 | 6566 |
| 13 | 6606 |
| 14 | 6616 |
| 15 | 6626 |
| 16 | 6636 |
| 17 | 6646 |
| 18 | 6656 |
| 19 | 6660 |
| 20 | 6661 |
| 21 | 6662 |
| 22 | 6663 |
| 23 | 6664 |
| 24 | 6665 |
| 25 | 6667 |
| 26 | 6668 |
| 27 | 6669 |
| 28 | 6676 |
| 29 | 6686 |
| 30 | 6696 |
| 31 | 6766 |
| 32 | 6866 |
| 33 | 6966 |
| 34 | 7666 |
| 35 | 8666 |
| 36 | 9666 |
| 37 | 10666 |