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 | 24 |
| 7 | 1 |
| 8 | 40 |
| 9 | 144 |
| 10 | 1 |
| 11 | 60 |
| 12 | 370 |
| 13 | 456 |
| 14 | 1 |
| 15 | 84 |
| 16 | 792 |
| 17 | 1640 |
| 18 | 1056 |
| 19 | 1 |
| 20 | 112 |
| 21 | 1498 |
| 22 | 4724 |
| 23 | 4930 |
| 24 | 2040 |
| 25 | 1 |
| 26 | 144 |
| 27 | 2592 |
| 28 | 11620 |
| 29 | 18096 |
| 30 | 11752 |
| 31 | 3504 |
| 32 | 1 |
| 33 | 180 |
| 34 | 4194 |
| 35 | 25424 |
| 36 | 55650 |
| 37 | 52716 |
| 38 | 24050 |
| 39 | 5544 |
| 40 | 1 |
| 41 | 220 |
| 42 | 6440 |
| 43 | 50832 |
| 44 | 149568 |
| 45 | 195972 |
| 46 | 127816 |
| 47 | 44200 |
| 48 | 8256 |
| 49 | 1 |
| 50 | 264 |