# A028768 (b-file synthesized from sequence entry) 1 2 2 3 3 6 4 7 5 8 6 10 7 12 8 13 9 17 10 18 11 19 12 21 13 22 14 23 15 24 16 27 17 28 18 29 19 30 20 32 21 33 22 35 23 37 24 38 25 39 26 40 27 41 28 42 29 43 30 46 31 47 32 48 33 50 34 51 35 52 36 53 37 54