T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

A237904

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

Terms

    a(0) =256a(1) =1768a(2) =1768a(3) =12441a(4) =21410a(5) =12441a(6) =88964a(7) =265306a(8) =265306a(9) =88964a(10) =636720a(11) =3351086a(12) =5825366a(13) =3351086a(14) =636720a(15) =4539422a(16) =42195634a(17) =130240640a(18) =130240640a(19) =42195634a(20) =4539422a(21) =32392585a(22) =529992314a(23) =2894506130a(24) =5180304200a(25) =2894506130

External references