Antidiagonal sums of the convolution array A213822.

Terms

a(0) =4a(1) =30a(2) =114a(3) =310a(4) =690a(5) =1344a(6) =2380a(7) =3924a(8) =6120a(9) =9130a(10) =13134a(11) =18330a(12) =24934a(13) =33180a(14) =43320a(15) =55624a(16) =70380a(17) =87894a(18) =108490a(19) =132510a(20) =160314a(21) =192280a(22) =228804a(23) =270300a(24) =317200a(25) =369954a(26) =429030a(27) =494914a(28) =568110a(29) =649140