# A007897 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 2 5 3 6 2 7 4 8 4 9 4 10 3 11 6 12 4 13 7 14 4 15 6 16 6 17 9 18 4 19 10 20 6 21 8 22 6 23 12 24 8 25 11 26 7 27 10 28 8 29 15 30 6 31 16 32 10 33 12 34 9 35 12 36 8 37 19 38 10 39 14 40 12 41 21 42 8 43 22 44 12 45 12 46 12 47 24 48 12 49 22 50 11 51 18 52 14 53 27 54 10 55 18 56 16 57 20 58 15 59 30 60 12 61 31 62 16 63 16 64 18 65 21 66 12 67 34 68 18 69 24 70 12 71 36 72 16 73 37 74 19 75 22 76 20 77 24 78 14 79 40 80 18 81 28