# A166720 (b-file synthesized from sequence entry) 0 0 1 3 2 3 3 9 4 12 5 15 6 9 7 21 8 6 9 27 10 15 11 33 12 18 13 39 14 21 15 45 16 12 17 51 18 27 19 57 20 240 21 63 22 33 23 69 24 18 25 75 26 39 27 81 28 42 29 87 30 45 31 93 32 24 33 99 34 51 35 105 36 108 37 111 38 57 39 117 40 30 41 123 42 63 43 129 44 66 45 135 46 69 47 141 48 36 49 147 50 75 51 153 52 312 53 159