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 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 7 |
| 7 | 1 |
| 8 | 1 |
| 9 | 21 |
| 10 | 21 |
| 11 | 1 |
| 12 | 1 |
| 13 | 51 |
| 14 | 161 |
| 15 | 51 |
| 16 | 1 |
| 17 | 1 |
| 18 | 113 |
| 19 | 813 |
| 20 | 813 |
| 21 | 113 |
| 22 | 1 |
| 23 | 1 |
| 24 | 239 |
| 25 | 3361 |
| 26 | 7631 |
| 27 | 3361 |
| 28 | 239 |
| 29 | 1 |
| 30 | 1 |
| 31 | 493 |
| 32 | 12421 |
| 33 | 53833 |
| 34 | 53833 |
| 35 | 12421 |
| 36 | 493 |
| 37 | 1 |
| 38 | 1 |
| 39 | 1003 |
| 40 | 42865 |
| 41 | 320107 |
| 42 | 607009 |
| 43 | 320107 |
| 44 | 42865 |
| 45 | 1003 |
| 46 | 1 |
| 47 | 1 |
| 48 | 2025 |
| 49 | 141549 |
| 50 | 1704693 |
| 51 | 5494017 |