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

A206678

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

Terms

    a(0) =81a(1) =306a(2) =1404a(3) =5352a(4) =24336a(5) =93696a(6) =422016a(7) =1639296a(8) =7321728a(9) =28666368a(10) =127080960a(11) =501063168a(12) =2206534656a(13) =8754665472a(14) =38325454848a(15) =152909291520a(16) =665878216704

External references