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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 6 |
| 6 | 7 |
| 7 | 3 |
| 8 | 24 |
| 9 | 46 |
| 10 | 40 |
| 11 | 15 |
| 12 | 120 |
| 13 | 326 |
| 14 | 430 |
| 15 | 315 |
| 16 | 105 |
| 17 | 720 |
| 18 | 2556 |
| 19 | 4536 |
| 20 | 4900 |
| 21 | 3150 |
| 22 | 945 |
| 23 | 5040 |
| 24 | 22212 |
| 25 | 49644 |
| 26 | 70588 |
| 27 | 66150 |
| 28 | 38115 |
| 29 | 10395 |
| 30 | 40320 |
| 31 | 212976 |
| 32 | 574848 |
| 33 | 1011500 |
| 34 | 1235080 |
| 35 | 1032570 |
| 36 | 540540 |
| 37 | 135135 |