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A274326
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Number of distinct irregular n-gon flexagons.
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0
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OFFSET
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2,4
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REFERENCES
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Les Pook, Flexagons inside out, Cambridge University Press, 2003, p. 84.
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LINKS
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Table of n, a(n) for n=2..7.
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EXAMPLE
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a(6) = 11, because there are 11 distinct irregular hexaflexagons.
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CROSSREFS
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Cf. A001683.
Sequence in context: A187259 A296593 A125064 * A055329 A193005 A152895
Adjacent sequences: A274323 A274324 A274325 * A274327 A274328 A274329
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KEYWORD
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nonn,hard,more
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AUTHOR
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Christian Schroeder, Jun 18 2016
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STATUS
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approved
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