Antidiagonal sums of the convolution array A213566.

Terms

a(0) =1a(1) =9a(2) =37a(3) =110a(4) =272a(5) =598a(6) =1213a(7) =2323a(8) =4265a(9) =7588a(10) =13184a(11) =22500a(12) =37881a(13) =63125a(14) =104381a(15) =171602a(16) =280896a(17) =458330a(18) =746085a(19) =1212415a(20) =1967761a(21) =3190824a(22) =5170752a(23) =8375400a(24) =13561777a(25) =21954753a(26) =35536213a(27) =57512918a(28) =93073520a(29) =150613438