# A076981 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 2 4 1 5 4 6 3 7 6 8 5 9 4 10 4 11 10 12 9 13 12 14 11 15 10 16 9 17 16 18 15 19 18 20 17 21 16 22 15 23 22 24 21 25 20 26 19 27 18 28 17 29 28 30 27 31 30 32 29 33 28 34 27 35 26 36 25 37 36 38 35 39 34 40 33 41 40 42 39 43 42 44 41 45 40 46 39 47 46 48 45 49 44 50 43 51 42 52 41 53 52 54 51 55 50 56 49 57 48 58 47 59 58 60 57 61 60 62 59 63 58 64 57 65 56 66 55 67 66 68 65 69 64 70 63 71 70 72 69