# A025823 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 0 4 1 5 0 6 1 7 0 8 1 9 1 10 2 11 1 12 2 13 1 14 2 15 1 16 2 17 1 18 3 19 2 20 4 21 2 22 4 23 2 24 4 25 2 26 4 27 3 28 5 29 4 30 6 31 4 32 6 33 4 34 6 35 4 36 7 37 5 38 8 39 6 40 9 41 6 42 9 43 6 44 9 45 7 46 10 47 8 48 11 49 9 50 12 51 9 52 12 53 9 54 13 55 10 56 14 57 11 58 15 59 12 60 16 61 12 62 16 63 13 64 17 65 14 66 18 67 15 68 19 69 16 70 20 71 16