Row sums of triangle A046527.

Terms

a(0) =1a(1) =2a(2) =8a(3) =37a(4) =179a(5) =881a(6) =4369a(7) =21746a(8) =108444a(9) =541362a(10) =2704158a(11) =13512392a(12) =67534828a(13) =337584992a(14) =1687627800a(15) =8437136085a(16) =42182258715a(17) =210899507685