Number of (n+1)X(7+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock equal.

A237808

Number of (n+1)X(7+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock equal.

Terms

    a(0) =276369a(1) =17059551a(2) =915038911a(3) =57208751041

External references