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A345649
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Number of vertices formed when connecting all 4n points on the perimeter of an n X n square by infinite lines.
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3
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0, 5, 61, 465, 1585, 5257, 9749, 24025, 38381, 67177, 100889, 176005, 210033, 360877, 450349, 589581, 779541, 1127509, 1251805, 1806061, 1970129, 2504401, 3116945, 4017701, 4163753, 5433657, 6335589
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history;
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OFFSET
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0,2
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COMMENTS
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See A345459 for images of the polygons.
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LINKS
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Table of n, a(n) for n=0..26.
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FORMULA
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a(n) = A345650(n) - A345459(n) + 1.
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CROSSREFS
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Cf. A345459 (number of polygons), A345650 (number of edges), A255011, A345648, A344993, A344857, A092098, A007678.
Sequence in context: A281713 A060060 A183379 * A000363 A200956 A203358
Adjacent sequences: A345646 A345647 A345648 * A345650 A345651 A345652
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KEYWORD
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nonn,more
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AUTHOR
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Scott R. Shannon and N. J. A. Sloane, Jun 21 2021
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STATUS
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approved
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