Number of (n+1) X (6+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A253433

Number of (n+1) X (6+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) =325a(1) =318a(2) =336a(3) =372a(4) =444a(5) =588a(6) =876a(7) =1452a(8) =2604a(9) =4908a(10) =9516a(11) =18732a(12) =37164a(13) =74028a(14) =147756a(15) =295212a(16) =590124a(17) =1179948a(18) =2359596a(19) =4718892a(20) =9437484a(21) =18874668a(22) =37749036a(23) =75497772a(24) =150995244a(25) =301990188a(26) =603980076a(27) =1207959852a(28) =2415919404a(29) =4831838508

External references