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A291808
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Number of tilings of an n X n square using distinct polyominoes.
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7
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OFFSET
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1,2
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COMMENTS
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The sequence gives the number of distinct tilings by polyominoes of a square with side n, considering tilings that are formed of distinct polyominoes. As for "free" polyominoes, tilings that are reflections or rotations of each other are not considered distinct.
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LINKS
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CROSSREFS
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Cf. A268416 (polyominoes that will fit in n-sided square), A291806 (polyomino tilings of square), A291807 (symmetric tilings), A291809 (tilings with differently sized polyominoes).
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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