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

A237965

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

Terms

    a(0) =81a(1) =340a(2) =340a(3) =1422a(4) =1944a(5) =1422a(6) =6042a(7) =10942a(8) =10942a(9) =6042a(10) =25777a(11) =64146a(12) =81483a(13) =64146a(14) =25777a(15) =109200a(16) =378532a(17) =645156a(18) =645156a(19) =378532a(20) =109200a(21) =462852a(22) =2202258a(23) =5242451a(24) =7259122a(25) =5242451a(26) =2202258a(27) =462852a(28) =1962464a(29) =12775098

External references