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A191101
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Number of regions in a complete but borderless regular polygon.
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1
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6, 18, 43, 72, 145, 210, 364, 432, 768, 938, 1441, 1680, 2483, 2448, 4010, 4480, 6154, 6798, 9063, 9000, 12901, 13962, 17848, 19152, 24100, 21450, 31869, 33824, 41383, 43758, 52886, 52920, 66638, 69958, 82915, 86760, 102009
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OFFSET
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5,1
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COMMENTS
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A complete borderless polygon is one where each vertex is connected to every other vertex except for adjacent vertices. Adjacent vertices are not connected by edges. The result is a polygon interior.
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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,easy
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AUTHOR
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EXTENSIONS
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a(8) onward corrected by T. D. Noe, Jun 02 2011
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STATUS
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approved
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