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

A206232

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

Terms

    a(0) =60a(1) =256a(2) =1136a(3) =5728a(4) =31652a(5) =170728a(6) =943584a(7) =5175034a(8) =28475596a(9) =156707492a(10) =861735284a(11) =4742758462a(12) =26087819020a(13) =143545024690a(14) =789722083016

External references