T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.
A258554
T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.
Terms
- a(0) =16a(1) =44a(2) =44a(3) =104a(4) =112a(5) =104a(6) =228a(7) =210a(8) =296a(9) =228a(10) =480a(11) =344a(12) =598a(13) =652a(14) =480a(15) =988a(16) =506a(17) =985a(18) =1244a(19) =1329a(20) =988a(21) =2008a(22) =683a(23) =1403a(24) =1891a(25) =2384a(26) =2530a(27) =2008a(28) =4052a(29) =894
External references
- oeis: A258554