# A025821 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 0 4 1 5 0 6 1 7 0 8 2 9 1 10 2 11 1 12 2 13 1 14 2 15 1 16 3 17 2 18 4 19 2 20 4 21 2 22 4 23 2 24 5 25 3 26 6 27 4 28 6 29 4 30 6 31 4 32 7 33 5 34 8 35 6 36 9 37 6 38 9 39 6 40 10 41 7 42 11 43 8 44 12 45 9 46 12 47 9 48 13 49 10 50 14 51 11 52 15 53 12 54 16 55 12 56 17 57 13 58 18 59 14 60 19 61 15 62 20 63 16 64 21 65 17 66 22 67 18 68 23