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A007402
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No-3-in-line problem for equilateral triangle array of side n.
(Formerly M0123)
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1
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1, 1, 2, 1, 2, 15, 1, 5, 7, 971, 20, 276
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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REFERENCES
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R. H. Buchholz, personal communication.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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CROSSREFS
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KEYWORD
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nonn,nice
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AUTHOR
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STATUS
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approved
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