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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 2 |
| 4 | 1 |
| 5 | 1 |
| 6 | 6 |
| 7 | 4 |
| 8 | 3 |
| 9 | 2 |
| 10 | 24 |
| 11 | 18 |
| 12 | 14 |
| 13 | 11 |
| 14 | 9 |
| 15 | 120 |
| 16 | 96 |
| 17 | 78 |
| 18 | 64 |
| 19 | 53 |
| 20 | 44 |
| 21 | 720 |
| 22 | 600 |
| 23 | 504 |
| 24 | 426 |
| 25 | 362 |
| 26 | 309 |
| 27 | 265 |
| 28 | 5040 |
| 29 | 4320 |
| 30 | 3720 |
| 31 | 3216 |
| 32 | 2790 |
| 33 | 2428 |
| 34 | 2119 |
| 35 | 1854 |
| 36 | 40320 |
| 37 | 35280 |
| 38 | 30960 |
| 39 | 27240 |
| 40 | 24024 |
| 41 | 21234 |
| 42 | 18806 |
| 43 | 16687 |
| 44 | 14833 |
| 45 | 362880 |
| 46 | 322560 |
[1,1,0,2,1,1,6,4,3,2,24,18,14,11,9,120,96,78,64, 53,44,720,600,504,426,362,309,265,5040,4320,3720, 3216,2790,2428,2119,1854,40320,35280,30960,27240, 24024,21234,18806,16687,14833,362880,322560] |