# A099495 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 2 4 6 5 12 6 25 7 55 8 118 9 254 10 548 11 1179 12 2539 13 5470 14 11780 15 25370 16 54641 17 117681 18 253452 19 545866 20 1175642 21 2532005 22 5453235 23 11744748 24 25294914 25 54478198 26 117330859 27 252697979 28 544241040 29 1172143560 30 2524470640 31 5437006381