# A093447 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 6 5 20 6 6 7 24 8 210 9 72 10 10 11 120 12 3024 13 1320 14 182 15 15 16 720 17 55440 18 32760 19 4896 20 380 21 21 22 5040 23 1235520 24 1028160 25 175560 26 13800 27 702 28 28 29 40320 30 32432400 31 39070080 32 7893600 33 657720 34 32736 35 1190 36 36 37 362880 38 980179200 39 1744364160