Row sums of triangle A297497.

Terms

a(0) =0a(1) =2a(2) =6a(3) =14a(4) =35a(5) =89a(6) =203a(7) =444a(8) =951a(9) =2051a(10) =4466a(11) =9860a(12) =21840a(13) =48045a(14) =104525a(15) =225116a(16) =482596a(17) =1035632a(18) =2232443a(19) =4834801a(20) =10493117a(21) =22741208a(22) =49074134a(23) =105310087a(24) =224848230a(25) =478534776a(26) =1017589182a(27) =2166420553a(28) =4622251942a(29) =9880423138