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A238822
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Number of equilateral triangles bounded by the sides and diagonals of a regular 3n-gon.
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1
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1, 14, 69, 188, 465, 882, 1645, 2648, 4257, 6170, 9273, 12564, 17485, 22778, 30585, 38288, 50031, 61074, 77311, 91580, 114009, 134750, 164634, 192456
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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,nice,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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