# A097660 (b-file synthesized from sequence entry) 0 0 1 2 2 4 3 6 4 8 5 10 6 10 7 10 8 12 9 10 10 12 11 8 12 8 13 6 14 18 15 14 16 10 17 10 18 8 19 5 20 12 21 14 22 9 23 7 24 10 25 18 26 14 27 13 28 15 29 13 30 15 31 10 32 14 33 12 34 17 35 16 36 17 37 15 38 13 39 21 40 24 41 15 42 9 43 16 44 12 45 22 46 20 47 21 48 20 49 16 50 19 51 16 52 21 53 20 54 25 55 20 56 20 57 21 58 26 59 19 60 20 61 19 62 22 63 19 64 17 65 23 66 28 67 24 68 22 69 20 70 27 71 26 72 25