Number of 6 X n 0..1 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

Terms

a(0) =64a(1) =729a(2) =2024a(3) =3645a(4) =5951a(5) =9919a(6) =16845a(7) =28558a(8) =47721a(9) =78071a(10) =124691a(11) =194314a(12) =295659a(13) =439799a(14) =640561a(15) =914958a(16) =1283653a(17) =1771455a(18) =2407847a(19) =3227546a(20) =4271095a(21) =5585487a(22) =7224821a(23) =9250990a(24) =11734401a(25) =14754727a(26) =18401691a(27) =22775882a(28) =27989603a(29) =34167751