Row sums of triangle A134634.

Terms

a(0) =1a(1) =2a(2) =6a(3) =18a(4) =54a(5) =164a(6) =508a(7) =1610a(8) =5222a(9) =17308a(10) =58484a(11) =200948a(12) =700348a(13) =2470472a(14) =8804024a(15) =31648858a(16) =114623366a(17) =417820972a(18) =1531629764a(19) =5642508508a(20) =20878731476a(21) =77561756152a(22) =289156105544