Row sums of triangle A053218.

Terms

a(0) =1a(1) =5a(2) =16a(3) =43a(4) =106a(5) =249a(6) =568a(7) =1271a(8) =2806a(9) =6133a(10) =13300a(11) =28659a(12) =61426a(13) =131057a(14) =278512a(15) =589807a(16) =1245166a(17) =2621421a(18) =5505004a(19) =11534315a(20) =24117226a(21) =50331625a(22) =104857576a(23) =218103783a(24) =452984806a(25) =939524069a(26) =1946157028a(27) =4026531811a(28) =8321499106