# A104557 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 2 5 1 6 6 7 6 8 4 9 1 10 24 11 24 12 18 13 6 14 1 15 120 16 120 17 96 18 36 19 9 20 1 21 720 22 720 23 600 24 240 25 72 26 12 27 1 28 5040 29 5040 30 4320 31 1800 32 600 33 120 34 16 35 1 36 40320 37 40320 38 35280 39 15120 40 5400 41 1200 42 200 43 20 44 1 45 362880 46 362880 47 322560 48 141120 49 52920 50 12600 51 2400 52 300 53 25 54 1