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 | 0 |
| 2 | 4 |
| 3 | 8 |
| 4 | 44 |
| 5 | 88 |
| 6 | 212 |
| 7 | 232 |
| 8 | 252 |
| 9 | 272 |
| 10 | 292 |
| 11 | 404 |
| 12 | 424 |
| 13 | 444 |
| 14 | 464 |
| 15 | 484 |
| 16 | 616 |
| 17 | 636 |
| 18 | 656 |
| 19 | 676 |
| 20 | 696 |
| 21 | 808 |
| 22 | 828 |
| 23 | 848 |
| 24 | 868 |
| 25 | 888 |
| 26 | 2112 |
| 27 | 2332 |
| 28 | 2552 |
| 29 | 2772 |
| 30 | 2992 |
| 31 | 4004 |
| 32 | 4224 |
| 33 | 4444 |
| 34 | 4664 |
| 35 | 4884 |
| 36 | 6116 |
| 37 | 6336 |
| 38 | 6556 |
| 39 | 6776 |
| 40 | 6996 |
| 41 | 8008 |
| 42 | 8228 |
| 43 | 8448 |
| 44 | 8668 |
| 45 | 8888 |
| 46 | 21012 |
| 47 | 21112 |
| 48 | 21212 |