a(n) is the number of tilings of the Aztec diamond of order n using dominoes and horizontal straight tetrominoes.

A356523

a(n) is the number of tilings of the Aztec diamond of order n using dominoes and horizontal straight tetrominoes.

Terms

    a(0) =1a(1) =2a(2) =11a(3) =209a(4) =12748a(5) =2432209a(6) =1473519065

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