# A007720 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 1 5 2 6 3 7 4 8 2 9 3 10 3 11 2 12 3 13 4 14 4 15 4 16 3 17 4 18 5 19 5 20 3 21 4 22 5 23 3 24 4 25 5 26 5 27 6 28 4 29 5 30 6 31 4 32 5 33 5 34 6 35 7 36 5 37 5 38 6 39 4 40 5 41 4 42 5 43 5 44 5 45 4 46 4 47 5 48 6 49 6 50 5 51 5 52 5 53 4 54 5 55 6 56 6 57 6 58 4 59 5 60 4 61 5 62 5 63 7 64 7