Row sums of A363733.

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =12a(5) =30a(6) =80a(7) =236a(8) =782a(9) =2872a(10) =11551a(11) =50208a(12) =233475a(13) =1153424a(14) =6022129a(15) =33094892a(16) =190798443a(17) =1150698311a(18) =7241821945a(19) =47455029775a(20) =323155438297