# A025867 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 1 5 0 6 0 7 1 8 2 9 0 10 0 11 1 12 2 13 0 14 1 15 2 16 3 17 0 18 1 19 2 20 3 21 1 22 2 23 3 24 4 25 1 26 2 27 3 28 5 29 2 30 3 31 4 32 6 33 2 34 3 35 5 36 7 37 3 38 4 39 6 40 8 41 3 42 5 43 7 44 9 45 4 46 6 47 8 48 10 49 5 50 7 51 9 52 11 53 6 54 8 55 10 56 13 57 7 58 9 59 11 60 14 61 8 62 10 63 13 64 16 65 9 66 11 67 14 68 17 69 10 70 13 71 16 72 19