# A139554 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 2 9 2 10 2 11 2 12 6 13 6 14 6 15 6 16 12 17 12 18 12 19 12 20 60 21 60 22 60 23 60 24 60 25 60 26 60 27 60 28 420 29 420 30 420 31 420 32 840 33 840 34 840 35 840 36 2520 37 2520 38 2520 39 2520 40 2520 41 2520 42 2520 43 2520 44 27720 45 27720 46 27720 47 27720 48 27720 49 27720 50 27720 51 27720 52 360360 53 360360