OFFSET
1,1
LINKS
Giovanni Resta, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Heronian Triangle
Wikipedia, Heronian triangle
Wikipedia, Integer Triangle
EXAMPLE
a(1) = 12; there is one Heronian triangle with perimeter 12 whose smallest side length is squarefree, [3,4,5].
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, May 27 2020
STATUS
approved