# A108032 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 3 4 2 5 2 6 15 7 9 8 6 9 6 10 105 11 60 12 36 13 24 14 24 15 945 16 525 17 300 18 180 19 120 20 120 21 10395 22 5670 23 3150 24 1800 25 1080 26 720 27 720 28 135135 29 72765 30 39690 31 22050 32 12600 33 7560 34 5040 35 5040 36 2027025 37 1081080 38 582120 39 317520 40 176400 41 100800 42 60480 43 40320 44 40320