Partial sums of A132357.

Terms

a(0) =0a(1) =1a(2) =5a(3) =19a(4) =60a(5) =182a(6) =546a(7) =1639a(8) =4919a(9) =14761a(10) =44286a(11) =132860a(12) =398580a(13) =1195741a(14) =3587225a(15) =10761679a(16) =32285040a(17) =96855122a(18) =290565366a(19) =871696099a(20) =2615088299a(21) =7845264901a(22) =23535794706a(23) =70607384120a(24) =211822152360a(25) =635466457081