OFFSET
1,1
COMMENTS
Not the same as A330869 (this sequence excludes 108, 252, 396, ..., etc.).
LINKS
Eric Weisstein's World of Mathematics, Heronian Triangle
Wikipedia, Heronian triangle
Wikipedia, Integer Triangle
EXAMPLE
a(1) = 16; there is one primitive Heronian triangle with a perimeter of 16 whose side lengths are squarefree, which is [5,5,6].
a(2) = 36; there is one primitive Heronian triangle with a perimeter of 36 whose side lengths are squarefree, [10,13,13].
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, May 05 2020
STATUS
approved