# A071883 (b-file synthesized from sequence entry) 0 0 1 2 2 1 3 6 4 2 5 9 6 2 7 12 8 3 9 20 10 6 11 25 12 6 13 20 14 3 15 20 16 4 17 35 18 12 19 56 20 15 21 56 22 10 23 49 24 10 25 56 26 15 27 56 28 12 29 35 30 4 31 30 32 5 33 54 34 20 35 99 36 28 37 110 38 21 39 110 40 24 41 143 42 40 43 156 44 35 45 108 46 14 47 81 48 14 49 108 50 35 51 156 52 40 53 143 54 24 55 110 56 21 57 110 58 28 59 99 60 20