Number of (n+1) X (7+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.

A253158

Number of (n+1) X (7+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.

Terms

    a(0) =613a(1) =624a(2) =633a(3) =668a(4) =740a(5) =884a(6) =1172a(7) =1748a(8) =2900a(9) =5204a(10) =9812a(11) =19028a(12) =37460a(13) =74324a(14) =148052a(15) =295508a(16) =590420a(17) =1180244a(18) =2359892a(19) =4719188a(20) =9437780a(21) =18874964a(22) =37749332a(23) =75498068a(24) =150995540a(25) =301990484a(26) =603980372a(27) =1207960148a(28) =2415919700a(29) =4831838804

External references