Row sums in A347738 when that sequence is written as a triangle.

Terms

a(0) =0a(1) =2a(2) =12a(3) =48a(4) =167a(5) =541a(6) =1692a(7) =5187a(8) =15700a(9) =47030a(10) =139986a(11) =415385a(12) =1230417a(13) =3638657a(14) =10744058a(15) =31705658a(16) =93563017a(17) =276079102a(18) =814408697a(19) =2402076923a(20) =7085491321a(21) =20902994644a(22) =61668276920a(23) =181926014930a(24) =536710980085