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A217749
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Number of triangular regions in the exterior of a regular n-gon with all diagonals drawn.
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1
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0, 0, 0, 0, 7, 24, 45, 70, 121, 180, 273, 406, 555, 784, 1071
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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3,5
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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