Row sums of A103462.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =13a(5) =28a(6) =72a(7) =217a(8) =741a(9) =2790a(10) =11388a(11) =49875a(12) =232781a(13) =1151928a(14) =6018800a(15) =33087221a(16) =190780229a(17) =1150653938a(18) =7241710948a(19) =47454745823a(20) =323154696205