# A025813 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 0 4 1 5 0 6 2 7 1 8 2 9 1 10 2 11 1 12 3 13 2 14 4 15 2 16 4 17 2 18 5 19 3 20 6 21 4 22 6 23 4 24 7 25 5 26 8 27 6 28 9 29 6 30 10 31 7 32 11 33 8 34 12 35 9 36 13 37 10 38 14 39 11 40 15 41 12 42 17 43 13 44 18 45 14 46 19 47 15 48 21 49 17 50 22 51 18 52 23 53 19 54 25 55 21 56 27 57 22 58 28 59 23 60 30 61 25 62 32 63 27 64 33