# A102239 (b-file synthesized from sequence entry) 0 1 1 7 2 31 3 157 4 781 5 3907 6 19531 7 97657 8 488281 9 2441407 10 12207031 11 61035157 12 305175781 13 1525878907 14 7629394531 15 38146972657 16 190734863281 17 953674316407 18 4768371582031 19 23841857910157 20 119209289550781 21 596046447753907