# A148703 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 7 4 23 5 71 6 246 7 848 8 3067 9 11203 10 41923 11 158643 12 609049 13 2360801 14 9241844 15 36462702 16 144923487 17 579644751 18 2331822681 19 9428784429 20 38304628521 21 156274395081 22 640047724638 23 2630764071180 24 10848645070305 25 44872818114761 26 186126953241661 27 774045543351733 28 3226842108102427