OFFSET
1,1
COMMENTS
A primitive Heronian triangle is a triangle with integer sides and area, where the side lengths do not share a common divisor.
LINKS
Mathematics Stack Exchange user "George", Semiperimeter of isosceles Heronian triangles.
Wikipedia, Isosceles Heronian triangles.
FORMULA
a(n) = 2*A096033(n+2) (conjectured).
EXAMPLE
Table illustrating first six terms of the sequence:
perimeter | sides | area
----------+------------+-----
16 | (5,5,6) | 12
18 | (5,5,8) | 12
36 | (10,13,13) | 60
50 | (13,13,24) | 60
50 | (16,17,17) | 120
64 | (14,25,25) | 168
64 | (17,17,30) | 120
98 | (24,37,37) | 420
98 | (25,25,48) | 168
98 | (29,29,40) | 420
CROSSREFS
KEYWORD
nonn
AUTHOR
Peter Kagey, May 16 2019
STATUS
approved