# A130018 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 4 5 9 6 22 7 56 8 152 9 428 10 1257 11 3827 12 12023 13 38975 14 129801 15 443833 16 1554849 17 5572334 18 20409121 19 76283610 20 290737945 21 1128730320 22 4460079331 23 17924115817 24 73207479057 25 303691230784 26 1278796858227 27 5462983288161 28 23664467118878 29 103895077228910