# A273496 (b-file synthesized from sequence entry) 0 1 1 0 2 2 3 2 4 0 5 2 6 0 7 6 8 0 9 2 10 6 11 0 12 8 13 0 14 2 15 0 16 20 17 0 18 10 19 0 20 2 21 20 22 0 23 30 24 0 25 12 26 0 27 2 28 0 29 70 30 0 31 42 32 0 33 14 34 0 35 2 36 70 37 0 38 112 39 0 40 56 41 0 42 16 43 0 44 2 45 0 46 252 47 0 48 168 49 0 50 72 51 0 52 18 53 0 54 2 55 252 56 0 57 420 58 0 59 240 60 0 61 90 62 0 63 20 64 0 65 2