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 | 9 |
| 5 | 11 |
| 6 | 15 |
| 7 | 21 |
| 8 | 27 |
| 9 | 41 |
| 10 | 45 |
| 11 | 81 |
| 12 | 129 |
| 13 | 135 |
| 14 | 357 |
| 15 | 429 |
| 16 | 431 |
| 17 | 447 |
| 18 | 507 |
| 19 | 567 |
| 20 | 569 |
| 21 | 2969 |
| 22 | 4721 |
| 23 | 5385 |
| 24 | 9309 |
| 25 | 9675 |
| 26 | 14429 |
| 27 | 25559 |
| 28 | 30755 |
| 29 | 35997 |
| 30 | 37509 |
| 31 | 50831 |
| 32 | 81837 |
| 33 | 104909 |
| 34 | 130019 |
| 35 | 148089 |
| 36 | 201105 |
| 37 | 397377 |
| 38 | 433779 |
| 39 | 590039 |
| 40 | 593687 |
| 41 | 604709 |
| 42 | 931515 |
| 43 | 1049895 |
| 44 | 1285605 |
| 45 | 1636005 |
| 46 | 1803057 |
| 47 | 1968719 |
| 48 | 2904351 |
| 49 | 3244367 |
| 50 | 3340365 |