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

A237472

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

Terms

    a(0) =81a(1) =356a(2) =356a(3) =1566a(4) =2308a(5) =1566a(6) =6954a(7) =14968a(8) =14968a(9) =6954a(10) =30913a(11) =99086a(12) =143780a(13) =99086a(14) =30913a(15) =136488a(16) =651906a(17) =1417638a(18) =1417638a(19) =651906a(20) =136488a(21) =603184a(22) =4259914a(23) =13827553a(24) =21134116a(25) =13827553a(26) =4259914a(27) =603184a(28) =2671904a(29) =27861088

External references