The number of tilings of 2 X n boards with squares of 2 colors and dominoes of 3 colors.

A253265

The number of tilings of 2 X n boards with squares of 2 colors and dominoes of 3 colors.

Terms

    a(0) =1a(1) =7a(2) =82a(3) =877a(4) =9565a(5) =103960a(6) =1130701a(7) =12296275a(8) =133724242a(9) =1454268793a(10) =15815379409a(11) =171994465072

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