# A006642 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 2 5 1 6 3 7 3 8 2 9 4 10 1 11 5 12 2 13 4 14 3 15 1 16 7 17 5 18 3 19 6 20 2 21 8 22 5 23 3 24 8 25 2 26 10 27 2 28 5 29 5 30 3 31 10 32 7 33 4 34 10 35 1 36 11 37 5 38 8 39 2 40 13 41 4 42 9 43 4 44 3 45 14 46 4 47 7 48 5 49 12 50 2 51 15 52 6 53 7 54 12 55 4 56 13 57 2 58 11 59 3 60 14 61 4 62 8 63 8 64 10 65 3 66 19 67 10 68 4