Row sums of triangle in A283321.

Terms

a(0) =1a(1) =2a(2) =4a(3) =22a(4) =149a(5) =1186a(6) =10807a(7) =110762a(8) =1260289a(9) =15757714a(10) =214703831a(11) =3165856882a(12) =50220944017a(13) =852735163034