# A025819 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 0 4 1 5 0 6 1 7 1 8 1 9 1 10 1 11 2 12 1 13 2 14 2 15 2 16 2 17 2 18 3 19 2 20 3 21 3 22 4 23 3 24 4 25 4 26 4 27 4 28 5 29 5 30 5 31 5 32 6 33 6 34 6 35 7 36 7 37 7 38 7 39 8 40 8 41 8 42 9 43 9 44 10 45 9 46 11 47 10 48 11 49 11 50 12 51 12 52 12 53 13 54 13 55 14 56 14 57 15 58 15 59 15 60 16 61 16 62 17 63 17 64 18 65 18 66 19 67 19 68 20