Find four whole numbers such that:
each pairwise sum is a perfect square and
the sum of all four is a perfect square.
(In reply to
A (bad?) guess by armando)
No it was a bad title. (Sorry.) There are 7 squares. I don't know why Charlie's program didn't find it.
Each of W<X<Y<Z are positive integers and
W+X
W+Y
W+Z
X+Y
X+Z
Y+Z
W+X+Y+Z
are all squares

Posted by Jer
on 20160701 11:11:57 