# A171731 (b-file synthesized from sequence entry) 0 0 1 1 2 0 3 1 4 2 5 0 6 2 7 3 8 3 9 0 10 3 11 8 12 6 13 4 14 0 15 5 16 15 17 20 18 10 19 5 20 0 21 8 22 30 23 45 24 40 25 15 26 6 27 0 28 13 29 56 30 105 31 105 32 70 33 21 34 7 35 0 36 21 37 104 38 224 39 280 40 210 41 112 42 28 43 8 44 0 45 34 46 189 47 468 48 672 49 630 50 378 51 168 52 36 53 9 54 0 55 55 56 340 57 945 58 1560 59 1680 60 1260 61 630 62 240 63 45 64 10 65 0