Antidiagonal sums of the convolution array A213753.

Terms

a(0) =1a(1) =9a(2) =44a(3) =160a(4) =491a(5) =1355a(6) =3486a(7) =8546a(8) =20245a(9) =46773a(10) =106048a(11) =236980a(12) =523535a(13) =1145935a(14) =2489202a(15) =5372534a(16) =11532633a(17) =24639513a(18) =52426420a(19) =111146280a(20) =234877811a(21) =494924179a(22) =1040183174a(23) =2181033290a(24) =4563397341a(25) =9529452605