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Search: id:A007237
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| A007237 |
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Number of triangles with integer sides and area = n times perimeter.
(Formerly M3878)
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+0
4
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| 5, 18, 45, 45, 52, 139, 80, 89, 184, 145, 103, 312, 96, 225, 379
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Problem E3408, Amer. Math. Monthly, 99 (1992), 175-176.
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CROSSREFS
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Sequence in context: A160969 A101105 A037140 this_sequence A000339 A081435 A109363
Adjacent sequences: A007234 A007235 A007236 this_sequence A007238 A007239 A007240
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KEYWORD
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nonn
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AUTHOR
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Simon Plouffe (simon.plouffe(AT)gmail.com)
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