# A129804 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 12 4 31 5 79 6 206 7 534 8 1396 9 3642 10 9530 11 24917 12 65221 13 170667 14 446780 15 1169467 16 3061621 17 8014862 18 20982965 19 54932637 20 143814946 21 376508559 22 985710731 23 2580614104 24 6756131581 25 17687755722 26 46307135585 27 121233585812