Number of (n+1) X 4 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.

A206113

Number of (n+1) X 4 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.

Terms

    a(0) =6028a(1) =22624a(2) =88596a(3) =520800a(4) =2408480a(5) =10792800a(6) =59892000a(7) =276975200a(8) =1241172000a(9) =6887580000a(10) =31852148000a(11) =142734780000a(12) =792071700000

External references