# A006166 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 3 4 3 5 3 6 3 7 5 8 7 9 9 10 9 11 9 12 9 13 9 14 9 15 9 16 9 17 9 18 9 19 11 20 13 21 15 22 17 23 19 24 21 25 23 26 25 27 27 28 27 29 27 30 27 31 27 32 27 33 27 34 27 35 27 36 27 37 27 38 27 39 27 40 27 41 27 42 27 43 27 44 27 45 27 46 27 47 27 48 27 49 27 50 27 51 27 52 27 53 27 54 27 55 29 56 31 57 33 58 35 59 37 60 39 61 41 62 43 63 45 64 47 65 49 66 51 67 53 68 55 69 57 70 59 71 61 72 63 73 65 74 67 75 69