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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 2 |
| 6 | 1 |
| 7 | 5 |
| 8 | 12 |
| 9 | 6 |
| 10 | 1 |
| 11 | 7 |
| 12 | 30 |
| 13 | 60 |
| 14 | 24 |
| 15 | 1 |
| 16 | 9 |
| 17 | 56 |
| 18 | 210 |
| 19 | 360 |
| 20 | 122 |
| 21 | 1 |
| 22 | 11 |
| 23 | 90 |
| 24 | 504 |
| 25 | 1680 |
| 26 | 2562 |
| 27 | 758 |
| 28 | 1 |
| 29 | 13 |
| 30 | 132 |
| 31 | 990 |
| 32 | 5040 |
| 33 | 15372 |
| 34 | 21224 |
| 35 | 5606 |
| 36 | 1 |
| 37 | 15 |
| 38 | 182 |
| 39 | 1716 |
| 40 | 11880 |
| 41 | 36364 |
| 42 | 159180 |
| 43 | 201816 |
| 44 | 47378 |
| 45 | 1 |
| 46 | 17 |
| 47 | 240 |
| 48 | 2730 |
| 49 | 24024 |
| 50 | 157014 |
| 51 | 700392 |
| 52 | 1849980 |
| 53 | 2177010 |
| 54 | 479532 |