# A171670 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 2 5 1 6 5 7 6 8 3 9 1 10 13 11 20 12 12 13 4 14 1 15 35 16 65 17 50 18 20 19 5 20 1 21 96 22 210 23 195 24 100 25 30 26 6 27 1 28 267 29 672 30 735 31 455 32 175 33 42 34 7 35 1 36 750 37 2136 38 2688 39 1960 40 910 41 280 42 56 43 8 44 1 45 2123 46 6750 47 9612 48 8064 49 4410 50 1638 51 420 52 72 53 9 54 1