Number of (n+1) X (n+1) 0..3 arrays with every 2 X 3 or 3 X 2 subblock having an equal number of clockwise and counterclockwise edge increases.

A206744

Number of (n+1) X (n+1) 0..3 arrays with every 2 X 3 or 3 X 2 subblock having an equal number of clockwise and counterclockwise edge increases.

Terms

    a(0) =256a(1) =36384a(2) =43894936a(3) =343128343904

External references