# A165675 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 3 5 1 6 6 7 11 8 5 9 1 10 24 11 50 12 26 13 7 14 1 15 120 16 274 17 154 18 47 19 9 20 1 21 720 22 1764 23 1044 24 342 25 74 26 11 27 1 28 5040 29 13068 30 8028 31 2754 32 638 33 107 34 13 35 1 36 40320 37 109584 38 69264 39 24552 40 5944 41 1066 42 146 43 15 44 1 45 362880 46 1026576 47 663696 48 241128 49 60216 50 11274 51 1650 52 191 53 17 54 1