Number of (n+1)X(6+1) 0..3 arrays with the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

A237972

Number of (n+1)X(6+1) 0..3 arrays with the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

Terms

    a(0) =1074202a(1) =14222512a(2) =149625960a(3) =2480183866a(4) =43487194848a(5) =713207137992

External references