OFFSET
0,1
COMMENTS
For n >= 7, a(n) = 0 because the equation x^n + y^n = 2*z^n has no solution for n > 2 apart from the trivial x = y = z.
REFERENCES
Richard K. Guy, Unsolved Problems in Number Theory, New York: Springer-Verlag, 2004, pp. 268-271.
LINKS
Henri Darmon and Loic Merel, Winding quotients and some variants of Fermat’s Last Theorem
Arkadiusz Wesolowski, Examples of these magic squares
Wikipedia, Fermat's Last Theorem
CROSSREFS
KEYWORD
nonn,fini,hard,more
AUTHOR
Arkadiusz Wesolowski, Apr 14 2016
STATUS
approved