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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 1 |
| 7 | 3 |
| 8 | 6 |
| 9 | 35 |
| 10 | 1 |
| 11 | 4 |
| 12 | 10 |
| 13 | 56 |
| 14 | 1365 |
| 15 | 1 |
| 16 | 5 |
| 17 | 15 |
| 18 | 84 |
| 19 | 1820 |
| 20 | 169911 |
| 21 | 1 |
| 22 | 6 |
| 23 | 21 |
| 24 | 120 |
| 25 | 2380 |
| 26 | 201376 |
| 27 | 67945521 |
| 28 | 1 |
| 29 | 7 |
| 30 | 28 |
| 31 | 165 |
| 32 | 3060 |
| 33 | 237336 |
| 34 | 74974368 |
| 35 | 89356415775 |
| 36 | 1 |
| 37 | 8 |
| 38 | 36 |
| 39 | 220 |
| 40 | 3876 |
| 41 | 278256 |
| 42 | 82598880 |
| 43 | 94525795200 |
| 44 | 396861704798625 |
| 45 | 1 |
| 46 | 9 |
| 47 | 45 |
| 48 | 286 |
| 49 | 4845 |
| 50 | 324632 |
| 51 | 90858768 |
| 52 | 99949406400 |
| 53 | 409663695276000 |
| 54 | 6098989894499557055 |
[1,1,1,1,2,3,1,3,6,35,1,4,10,56,1365,1,5,15,84, 1820,169911,1,6,21,120,2380,201376,67945521,1,7, 28,165,3060,237336,74974368,89356415775,1,8,36, 220,3876,278256,82598880,94525795200, 396861704798625,1,9,45,286,4845,324632,90858768, 99949406400,409663695276000,6098989894499557055] |