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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 2 |
| 4 | 6 |
| 5 | 11 |
| 6 | 6 |
| 7 | 10 |
| 8 | 39 |
| 9 | 54 |
| 10 | 24 |
| 11 | 15 |
| 12 | 114 |
| 13 | 304 |
| 14 | 324 |
| 15 | 120 |
| 16 | 21 |
| 17 | 300 |
| 18 | 1384 |
| 19 | 2664 |
| 20 | 2280 |
| 21 | 720 |
| 22 | 28 |
| 23 | 741 |
| 24 | 5598 |
| 25 | 17364 |
| 26 | 25800 |
| 27 | 18360 |
| 28 | 5040 |
| 29 | 36 |
| 30 | 1757 |
| 31 | 21054 |
| 32 | 99012 |
| 33 | 227400 |
| 34 | 273720 |
| 35 | 166320 |
| 36 | 40320 |
| 37 | 45 |
| 38 | 4052 |
| 39 | 75504 |
| 40 | 518592 |
| 41 | 1728816 |
| 42 | 3131400 |
| 43 | 3160080 |
| 44 | 1673280 |
| 45 | 362880 |
| 46 | 55 |
| 47 | 9162 |
| 48 | 262104 |
| 49 | 2564892 |
| 50 | 11934816 |
| 51 | 30523800 |
| 52 | 45496080 |
| 53 | 39473280 |
| 54 | 18506880 |
| 55 | 3628800 |
[1,3,2,6,11,6,10,39,54,24,15,114,304,324,120,21, 300,1384,2664,2280,720,28,741,5598,17364,25800, 18360,5040,36,1757,21054,99012,227400,273720, 166320,40320,45,4052,75504,518592,1728816,3131400, 3160080,1673280,362880,55,9162,262104,2564892, 11934816,30523800,45496080,39473280,18506880, 3628800] |