# A182027 (b-file synthesized from sequence entry) 0 1 1 2 2 2 3 2 4 4 5 6 6 12 7 20 8 40 9 70 10 140 11 252 12 504 13 924 14 1848 15 3432 16 6864 17 12870 18 25740 19 48620 20 97240 21 184756 22 369512 23 705432 24 1410864 25 2704156 26 5408312 27 10400600 28 20801200 29 40116600 30 80233200 31 155117520 32 310235040 33 601080390 34 1202160780 35 2333606220 36 4667212440 37 9075135300 38 18150270600 39 35345263800