# A119828 (b-file synthesized from sequence entry) 0 1 1 2 2 1 3 24 4 12 5 1 6 720 7 360 8 30 9 1 10 40320 11 20160 12 1680 13 56 14 1 15 3628800 16 1814400 17 151200 18 5040 19 90 20 1 21 479001600 22 239500800 23 19958400 24 665280 25 11880 26 132 27 1 28 87178291200 29 43589145600 30 3632428800 31 121080960 32 2162160 33 24024 34 182 35 1