Row sums of triangle A046089.

Terms

a(0) =1a(1) =1a(2) =4a(3) =22a(4) =154a(5) =1306a(6) =12976a(7) =147484a(8) =1883932a(9) =26680924a(10) =414468496a(11) =7001104936a(12) =127677078904