# A137235 (b-file synthesized from sequence entry) 0 6 1 1 2 7 3 2 4 8 5 3 6 9 7 4 8 10 9 5 10 11 11 6 12 12 13 7 14 13 15 8 16 14 17 9 18 15 19 10 20 16 21 11 22 17 23 12 24 18 25 13 26 19 27 14 28 20 29 15 30 21 31 16 32 22 33 17 34 23 35 18 36 24 37 19 38 25 39 20 40 26 41 21 42 27 43 22 44 28 45 23 46 29 47 24 48 30 49 25 50 31 51 26 52 32 53 27 54 33 55 28 56 34 57 29 58 35 59 30 60 36 61 31 62 37 63 32 64 38 65 33 66 39 67 34 68 40 69 35 70 41 71 36 72 42 73 37