Number of (5+1) X (n+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A253439

Number of (5+1) X (n+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

Terms

    a(0) =181a(1) =180a(2) =193a(3) =228a(4) =300a(5) =444a(6) =732a(7) =1308a(8) =2460a(9) =4764a(10) =9372a(11) =18588a(12) =37020a(13) =73884a(14) =147612a(15) =295068a(16) =589980a(17) =1179804a(18) =2359452a(19) =4718748a(20) =9437340a(21) =18874524a(22) =37748892a(23) =75497628a(24) =150995100a(25) =301990044a(26) =603979932a(27) =1207959708a(28) =2415919260a(29) =4831838364

External references