Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally and vertically.

A254889

Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally and vertically.

Terms

    a(0) =9560a(1) =35296a(2) =171400a(3) =822072a(4) =2580056a(5) =8115610a(6) =23589212a(7) =59995430a(8) =145387986a(9) =331801795a(10) =719425086a(11) =1522572859a(12) =3138860414a(13) =6329390631a(14) =12570672314a(15) =24624380444a(16) =47807796436a(17) =92338992457a(18) =177468932212a(19) =339829018669

External references