# A329557 (b-file synthesized from sequence entry) 0 1 1 3 2 15 3 165 4 2145 5 36465 6 1057485 7 32782035 8 1344063435 9 57794727705 10 2716352202135 11 160264779925965 12 10737740255039655 13 783855038617894815 14 61924548050813690385 15 5139737488217536301955 16 519113486309971166497455 17 56583370007786857148222595 18 6393920810879914857749153235