# A072945 (b-file synthesized from sequence entry) 0 1 1 3 2 3 3 4 4 5 5 5 6 5 7 6 8 7 9 8 10 8 11 9 12 9 13 10 14 10 15 10 16 12 17 12 18 12 19 12 20 12 21 13 22 13 23 14 24 14 25 15 26 15 27 16 28 16 29 16 30 16 31 18 32 19 33 19 34 19 35 19 36 20 37 21 38 21 39 21 40 21 41 21 42 21 43 23 44 23 45 24 46 24 47 24 48 24 49 25 50 25 51 25 52 25 53 25 54 25 55 26 56 27 57 28 58 28 59 28 60 28 61 28 62 28 63 28 64 30 65 30 66 30 67 31 68 31 69 32 70 32 71 33 72 33