# A090238 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 0 4 2 5 1 6 0 7 6 8 4 9 1 10 0 11 24 12 16 13 6 14 1 15 0 16 120 17 72 18 30 19 8 20 1 21 0 22 720 23 372 24 152 25 48 26 10 27 1 28 0 29 5040 30 2208 31 828 32 272 33 70 34 12 35 1 36 0 37 40320 38 14976 39 4968 40 1576 41 440 42 96 43 14 44 1 45 0 46 362880 47 115200 48 33192 49 9696 50 2720 51 664 52 126 53 16 54 1 55 0 56 3628800 57 996480 58 247968 59 64704 60 17312 61 4380 62 952 63 160 64 18 65 1