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A026298
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Number of polyhexes of class PF2.
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9
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4, 28, 176, 950, 4908, 24402, 119240, 575348, 2757460, 13157752, 62638788, 297832008, 1415550920, 6728600060, 31998023632, 152271569872, 725231959452, 3457304575812, 16497751608120, 78804354881238, 376806016649964, 1803539487096138, 8641075826669256, 41441524062045660
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OFFSET
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7,1
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COMMENTS
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See reference for precise definition.
Cyvin et al. has incorrect a(13) = 119204 and a(14) = 575312 due to using incorrect value for A039919(5); cf. A039659. - Sean A. Irvine, Sep 24 2019
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LINKS
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FORMULA
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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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