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 | 2 |
| 5 | 2 |
| 6 | 1 |
| 7 | 3 |
| 8 | 9 |
| 9 | 9 |
| 10 | 1 |
| 11 | 4 |
| 12 | 24 |
| 13 | 96 |
| 14 | 96 |
| 15 | 1 |
| 16 | 5 |
| 17 | 50 |
| 18 | 500 |
| 19 | 2500 |
| 20 | 2500 |
| 21 | 1 |
| 22 | 6 |
| 23 | 90 |
| 24 | 1800 |
| 25 | 27000 |
| 26 | 162000 |
| 27 | 162000 |
| 28 | 1 |
| 29 | 7 |
| 30 | 147 |
| 31 | 5145 |
| 32 | 180075 |
| 33 | 3781575 |
| 34 | 26471025 |
| 35 | 26471025 |
| 36 | 1 |
| 37 | 8 |
| 38 | 224 |
| 39 | 12544 |
| 40 | 878080 |
| 41 | 49172480 |
| 42 | 1376829440 |
| 43 | 11014635520 |
| 44 | 11014635520 |
| 45 | 1 |
| 46 | 9 |
| 47 | 324 |