Number of tilings of a 5 X 2n rectangle using dominoes and 2 X 2 tiles.

A352433

Number of tilings of a 5 X 2n rectangle using dominoes and 2 X 2 tiles.

Terms

    a(0) =1a(1) =21a(2) =593a(3) =17937a(4) =550969a(5) =16982489a(6) =523857737a(7) =16162268361a(8) =498665065833

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