# A126569 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 14 4 42 5 132 6 430 7 1444 8 4981 9 17594 10 63442 11 232828 12 867146 13 3269060 14 12446684 15 47771496 16 184544427 17 716658870 18 2794956099 19 10938266562 20 42930256917 21 168890693650 22 665739119129 23 2628578437646 24 10393091551794 25 41141896235012 26 163028816478833