# A131182 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 0 4 1 5 1 6 0 7 2 8 2 9 1 10 0 11 6 12 8 13 3 14 1 15 0 16 24 17 48 18 18 19 4 20 1 21 0 22 120 23 384 24 162 25 32 26 5 27 1 28 0 29 720 30 3840 31 1944 32 384 33 50 34 6 35 1 36 0 37 5040 38 46080 39 29160 40 6144 41 750 42 72 43 7 44 1 45 0 46 40320 47 645120 48 524880 49 122880 50 15000 51 1296 52 98 53 8 54 1 55 0 56 362880 57 10321920 58 11022480 59 2949120 60 375000 61 31104 62 2058 63 128 64 9 65 1