# A318910 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 6 5 11 6 20 7 37 8 70 9 132 10 252 11 482 12 924 13 1778 14 3432 15 6639 16 12870 17 24994 18 48620 19 94716 20 184756 21 360821 22 705432 23 1380533 24 2704156 25 5301248 26 10400600 27 20419624 28 40116600 29 78861995 30 155117520 31 305272239 32 601080390 33 1184086260 34 2333606220 35 4601020897 36 9075135300