Row sums of A375467.

Terms

a(0) =0a(1) =1a(2) =1a(3) =3a(4) =8a(5) =23a(6) =62a(7) =178a(8) =495a(9) =1413a(10) =4015a(11) =11511a(12) =33000a(13) =95079a(14) =274163a(15) =792586a(16) =2294010a(17) =6649760a(18) =19295361a(19) =56048352a(20) =162940687a(21) =474069314a(22) =1380215558a(23) =4020916787a(24) =11720484787a(25) =34181438615a(26) =99733002848a(27) =291122869293a(28) =850134963598