# A126500 (b-file synthesized from sequence entry) 0 1 1 32 2 212 3 1428 4 9676 5 65800 6 448524 7 3062596 8 20939104 9 143307908 10 981612296 11 6728277248 12 46143758054 13 316613006372 14 2173302900418 15 14923204166476 16 102502175850752 17 704231575697316 18 4839430076086740 19 33262613275263868