# A265609 (b-file synthesized from sequence entry) 0 1 1 1 2 0 3 1 4 1 5 0 6 1 7 2 8 2 9 0 10 1 11 3 12 6 13 6 14 0 15 1 16 4 17 12 18 24 19 24 20 0 21 1 22 5 23 20 24 60 25 120 26 120 27 0 28 1 29 6 30 30 31 120 32 360 33 720 34 720 35 0 36 1 37 7 38 42 39 210 40 840 41 2520 42 5040 43 5040 44 0 45 1 46 8 47 56 48 336 49 1680 50 6720 51 20160 52 40320 53 40320 54 0