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) |
|---|---|
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 35 |
| 10 | 1 |
| 11 | 126 |
| 12 | 1 |
| 13 | 336 |
| 14 | 1 |
| 15 | 792 |
| 16 | 1 |
| 17 | 1749 |
| 18 | 5775 |
| 19 | 1 |
| 20 | 3718 |
| 21 | 45045 |
| 22 | 1 |
| 23 | 7722 |
| 24 | 231231 |
| 25 | 1 |
| 26 | 15808 |
| 27 | 981981 |
| 28 | 1 |
| 29 | 32071 |
| 30 | 3741738 |
| 31 | 2627625 |
| 32 | 1 |
| 33 | 64702 |
| 34 | 13307294 |
| 35 | 35735700 |
| 36 | 1 |
| 37 | 130084 |
| 38 | 45172842 |
| 39 | 300179880 |
| 40 | 1 |
| 41 | 260984 |
| 42 | 148417854 |
| 43 | 2002016016 |
| 44 | 1 |
| 45 | 522937 |
| 46 | 476330361 |