# A149061 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 11 4 39 5 155 6 629 7 2635 8 11375 9 49775 10 221993 11 1000469 12 4559119 13 20954301 14 97007355 15 452068093 16 2117955301 17 9972403285 18 47151732371 19 223801633257 20 1065825239793 21 5091269173915 22 24386527347883 23 117095676603227 24 563513272181635 25 2717367767033319 26 13128069939371165 27 63531808704306035