# A028172 (b-file synthesized from sequence entry) 0 1 1 30 2 573 3 8918 4 123669 5 1595958 6 19642141 7 234045366 8 2726478117 9 31257792566 10 354281953389 11 3982604010294 12 44504504288245 13 495188689219254 14 5492628385206717 15 60786003189650102 16 671598926425152453