# A052856 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 14 4 76 5 542 6 4684 7 47294 8 545836 9 7087262 10 102247564 11 1622632574 12 28091567596 13 526858348382 14 10641342970444 15 230283190977854 16 5315654681981356 17 130370767029135902 18 3385534663256845324