# A097065 (b-file synthesized from sequence entry) 0 1 1 -1 2 2 3 0 4 3 5 1 6 4 7 2 8 5 9 3 10 6 11 4 12 7 13 5 14 8 15 6 16 9 17 7 18 10 19 8 20 11 21 9 22 12 23 10 24 13 25 11 26 14 27 12 28 15 29 13 30 16 31 14 32 17 33 15 34 18 35 16 36 19 37 17 38 20 39 18 40 21 41 19 42 22 43 20 44 23 45 21 46 24 47 22 48 25 49 23 50 26 51 24 52 27 53 25 54 28 55 26 56 29 57 27 58 30 59 28 60 31 61 29 62 32 63 30 64 33 65 31 66 34 67 32 68 35 69 33 70 36 71 34 72 37 73 35 74 38