OFFSET
1,1
EXAMPLE
x=85,y=204, 85^2+204^2 = 221^2
PROG
(PARI) xydivxpynodiv7(n) = { for(x=1, n, for(y=x, n, h=x*y/(x+y); if(h==floor(h), z = sqrt(x^2+y^2); if(z==floor(z) && floor(z)%7, print1(x", ") ) ) ) ) }
CROSSREFS
KEYWORD
nonn
AUTHOR
Cino Hilliard, Dec 02 2003
STATUS
approved