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A222202
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Number of ways to cover the 2n X 2n grid graph by vertex disjoint cycles.
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7
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1, 18, 13903, 360783593, 303872744726644, 8217125138015950451626, 7095967027221343377167292602835, 195081705501438193439250404333039349462635, 170400931523966165754313513175663906434875251822099185, 4722705723996809689481769489662532396060449405036901391459114641198
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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