Number of (n+1) X (2+1) 0..2 arrays with each 2 X 2 subblock having the number of clockwise edge increases less than or equal to the number of counterclockwise edge increases.

A234826

Number of (n+1) X (2+1) 0..2 arrays with each 2 X 2 subblock having the number of clockwise edge increases less than or equal to the number of counterclockwise edge increases.

Terms

    a(0) =516a(1) =9207a(2) =161631a(3) =2826144a(4) =49366557a(5) =862112943a(6) =15054585588a(7) =262885602843

External references