Row sums of triangle A132819.

Terms

a(0) =1a(1) =4a(2) =16a(3) =65a(4) =266a(5) =1092a(6) =4488a(7) =18447a(8) =75790a(9) =311168a(10) =1276496a(11) =5231954a(12) =21425236a(13) =87662200a(14) =358374960a(15) =1463921595a(16) =5975446230a(17) =24373220520a(18) =99348849600a(19) =404703270510