Re: Can we prove that it is never a square?

*To*: mathgroup at smc.vnet.net*Subject*: [mg68563] Re: Can we prove that it is never a square?*From*: Kent Holing <KHO at statoil.com>*Date*: Wed, 9 Aug 2006 23:57:00 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Actually this turned out to be quite easy by hand: The expression lies between Q^2 and (Q+1)^2 for n > 17 where Q = n^6 - 5n^4 + 7 n^2 + 65 (thanks to Dave Rusin for pointing this out). Kent Holing