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 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 9 |
| 6 | 22 |
| 7 | 44 |
| 8 | 66 |
| 9 | 88 |
| 10 | 111 |
| 11 | 212 |
| 12 | 232 |
| 13 | 252 |
| 14 | 272 |
| 15 | 292 |
| 16 | 333 |
| 17 | 414 |
| 18 | 434 |
| 19 | 454 |
| 20 | 474 |
| 21 | 494 |
| 22 | 555 |
| 23 | 616 |
| 24 | 636 |
| 25 | 656 |
| 26 | 676 |
| 27 | 696 |
| 28 | 777 |
| 29 | 818 |
| 30 | 838 |
| 31 | 858 |
| 32 | 878 |
| 33 | 898 |
| 34 | 999 |
| 35 | 2002 |
| 36 | 2222 |
| 37 | 2442 |
| 38 | 2662 |
| 39 | 2882 |
| 40 | 4004 |
| 41 | 4224 |
| 42 | 4444 |
| 43 | 4664 |
| 44 | 4884 |
| 45 | 6006 |
| 46 | 6226 |
| 47 | 6446 |
| 48 | 6666 |
| 49 | 6886 |
| 50 | 8008 |
| 51 | 8228 |
| 52 | 8448 |
| 53 | 8668 |
| 54 | 8888 |
| 55 | 10101 |