Number of (n+1)X3 0..3 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..3 introduced in row major order.

A205434

Number of (n+1)X3 0..3 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..3 introduced in row major order.

Terms

    a(0) =77a(1) =833a(2) =10275a(3) =140423a(4) =2052727a(5) =31378965a(6) =493169259a(7) =7881048447a(8) =127174581623

External references