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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 4 |
| 6 | 3 |
| 7 | 1 |
| 8 | 10 |
| 9 | 21 |
| 10 | 12 |
| 11 | 1 |
| 12 | 22 |
| 13 | 93 |
| 14 | 132 |
| 15 | 60 |
| 16 | 1 |
| 17 | 46 |
| 18 | 345 |
| 19 | 900 |
| 20 | 960 |
| 21 | 360 |
| 22 | 1 |
| 23 | 94 |
| 24 | 1173 |
| 25 | 4980 |
| 26 | 9300 |
| 27 | 7920 |
| 28 | 2520 |
| 29 | 1 |
| 30 | 190 |
| 31 | 3801 |
| 32 | 24612 |
| 33 | 71400 |
| 34 | 103320 |
| 35 | 73080 |
| 36 | 20160 |
| 37 | 1 |
| 38 | 382 |
| 39 | 11973 |
| 40 | 113652 |
| 41 | 480060 |
| 42 | 1048320 |
| 43 | 1234800 |
| 44 | 745920 |
| 45 | 181440 |
| 46 | 1 |
| 47 | 766 |
| 48 | 37065 |
| 49 | 502500 |
| 50 | 2968560 |
| 51 | 9170280 |
| 52 | 15981840 |
| 53 | 15845760 |
| 54 | 8346240 |
| 55 | 1814400 |
[0,1,1,1,4,3,1,10,21,12,1,22,93,132,60,1,46,345, 900,960,360,1,94,1173,4980,9300,7920,2520,1,190, 3801,24612,71400,103320,73080,20160,1,382,11973, 113652,480060,1048320,1234800,745920,181440,1,766, 37065,502500,2968560,9170280,15981840,15845760, 8346240,1814400] |