# A149338 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 12 4 40 5 149 6 560 7 2135 8 8355 9 33259 10 133255 11 538825 12 2200026 13 9034022 14 37274431 15 154600734 16 644062873 17 2692163743 18 11289636850 19 47490421438 20 200293595870 21 846706012593 22 3587270304952 23 15229272818359 24 64770883633813 25 275939465431865 26 1177442622478762 27 5031536426507492