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

A253455

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

Terms

    a(0) =48293a(1) =74324a(2) =89556a(3) =114717a(4) =170184a(5) =285681a(6) =526430a(7) =1036512a(8) =2142374a(9) =4611192a(10) =10320110a(11) =24051792a(12) =58456694a(13) =148091112a(14) =389833790a(15) =1060740672a(16) =2964819014a(17) =8459769432a(18) =24510051470a(19) =71791759152a(20) =211898605334a(21) =628742590152

External references