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A120569
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Number of isosceles triangles with integer sides and inradius n.
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1
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0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 3, 0, 0, 2, 1, 0, 1, 0, 2, 2, 0, 0, 5, 0, 0, 1, 1, 0, 3, 0, 1, 1, 0, 1, 4, 0, 0, 1, 3, 0, 3, 0, 1, 2, 0, 0, 5, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 8, 0, 0, 3, 1, 0, 1, 0, 1, 1, 2, 0, 6, 0, 0, 2, 1, 0, 2, 0, 3, 1, 0, 0, 6, 0, 0, 1, 1, 0, 4, 0, 1, 1, 0, 0, 5, 0, 0, 2, 2, 0, 1, 0, 1, 5
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,12
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LINKS
| David W. Wilson, Table of n, a(n) for n = 1..10000
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EXAMPLE
| a(24) = 5 because 5 integer-sided isosceles triangles, namely (a,b,c) = (80,80,96), (80,85,85), (90,90,144), (130,130,240), (175,175,336), have inradius 24.
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CROSSREFS
| See A120062 for sequences related to integer-sided triangles with integer inradius n.
Sequence in context: A115979 A067168 A099475 * A128113 A108930 A059682
Adjacent sequences: A120566 A120567 A120568 * A120570 A120571 A120572
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KEYWORD
| nonn
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net), Jun 17 2006
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