|
Search: id:A120569
|
|
|
| A120569 |
|
Number of isosceles triangles with integer sides and inradius n. |
|
+0
1
|
|
| 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; listen)
|
|
|
OFFSET
|
1,12
|
|
|
LINKS
|
David W. Wilson, Table of n, a(n) for n = 1..10000
|
|
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.
|
|
CROSSREFS
|
See A120062 for sequences related to integer-sided triangles with integer inradius n.
Sequence in context: A115979 A067168 A099475 this_sequence A128113 A108930 A059682
Adjacent sequences: A120566 A120567 A120568 this_sequence A120570 A120571 A120572
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
David W. Wilson (davidwwilson(AT)comcast.net), Jun 17 2006
|
|
|
Search completed in 0.002 seconds
|
