Number of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.

A253151

Number of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.

Terms

    a(0) =16a(1) =72a(2) =94a(3) =164a(4) =308a(5) =596a(6) =1172a(7) =2324a(8) =4628a(9) =9236a(10) =18452a(11) =36884a(12) =73748a(13) =147476a(14) =294932a(15) =589844a(16) =1179668a(17) =2359316a(18) =4718612a(19) =9437204a(20) =18874388a(21) =37748756a(22) =75497492a(23) =150994964a(24) =301989908a(25) =603979796

External references