# A053727 (b-file synthesized from sequence entry) 1 1 2 2 3 0 4 3 5 3 6 0 7 4 8 4 9 4 10 0 11 5 12 10 13 10 14 5 15 0 16 6 17 12 18 18 19 12 20 6 21 0 22 7 23 21 24 35 25 35 26 21 27 7 28 0 29 8 30 24 31 56 32 64 33 56 34 24 35 8 36 0 37 9 38 36 39 81 40 126 41 126 42 81 43 36 44 9 45 0 46 10 47 40 48 120 49 200 50 250 51 200 52 120 53 40 54 10 55 0 56 11 57 55 58 165 59 330 60 462 61 462 62 330 63 165 64 55 65 11 66 0 67 12 68 60