# A149932 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 15 4 49 5 165 6 584 7 2134 8 7902 9 29892 10 114882 11 445389 12 1746830 13 6917227 14 27555548 15 110577812 16 446571878 17 1811419809 18 7384904017 19 30243833998 20 124275887253 21 512565470691 22 2121206098773 23 8801749477275 24 36626130235013 25 152811471519802 26 638933029743026 27 2677526963798012