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

A237463

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

Terms

    a(0) =81a(1) =308a(2) =308a(3) =1144a(4) =1376a(5) =1144a(6) =4272a(7) =5938a(8) =5938a(9) =4272a(10) =16280a(11) =25974a(12) =27915a(13) =25974a(14) =16280a(15) =61152a(16) =113324a(17) =125998a(18) =125998a(19) =113324a(20) =61152a(21) =231680a(22) =496942a(23) =578435a(24) =594190a(25) =578435a(26) =496942a(27) =231680a(28) =869120a(29) =2183186

External references