Triangular array: (1/2)*A193847.

Terms

a(0) =1a(1) =4a(2) =2a(3) =13a(4) =14a(5) =4a(6) =40a(7) =68a(8) =40a(9) =8a(10) =121a(11) =284a(12) =256a(13) =104a(14) =16a(15) =364a(16) =1094a(17) =1336a(18) =824a(19) =256a(20) =32a(21) =1093a(22) =4010a(23) =6196a(24) =5144a(25) =2416a(26) =608a(27) =64a(28) =3280a(29) =14216