Antidiagonal sums of the convolution array A213841.

Terms

a(0) =1a(1) =13a(2) =62a(3) =190a(4) =455a(5) =931a(6) =1708a(7) =2892a(8) =4605a(9) =6985a(10) =10186a(11) =14378a(12) =19747a(13) =26495a(14) =34840a(15) =45016a(16) =57273a(17) =71877a(18) =89110a(19) =109270a(20) =132671a(21) =159643a(22) =190532a(23) =225700a(24) =265525a(25) =310401a(26) =360738a(27) =416962a(28) =479515a(29) =548855