Antidiagonal sums of the convolution array A213590.

Terms

a(0) =1a(1) =6a(2) =23a(3) =70a(4) =184a(5) =438a(6) =971a(7) =2042a(8) =4125a(9) =8076a(10) =15424a(11) =28876a(12) =53189a(13) =96670a(14) =173747a(15) =309362a(16) =546456a(17) =958690a(18) =1672015a(19) =2901170a(20) =5011321a(21) =8621976a(22) =14781888a(23) =25263000a(24) =43053769a(25) =73186038a(26) =124119311a(27) =210055582a(28) =354806200a(29) =598245006