# A135980 (b-file synthesized from sequence entry) 1 5 2 9 3 10 4 12 5 13 6 14 7 15 8 16 9 17 10 19 11 20 12 21 13 22 14 23 15 25 16 26 17 27 18 29 19 30 20 32 21 33 22 34 23 35 24 36 25 37 26 38 27 39 28 40 29 41 30 42 31 43 32 44 33 45 34 46 35 47 36 48 37 49 38 50 39 51 40 52 41 53 42 54 43 55 44 56 45 57 46 58 47 59 48 60 49 61 50 62 51 63 52 64 53 65 54 66 55 67 56 68 57 69 58 70 59 71 60 72 61 73 62 74 63 75 64 76 65 77 66 78