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1,1
No other terms < 10^18. - Jud McCranie, Nov 03 2013
No other terms < 4.5*10^18. - Giovanni Resta, Apr 28 2014
Table of n, a(n) for n=1..10.
Wikipedia, Redmond-Sun conjecture
Cf. A001597 (perfect powers), A116086.
Cf. A068435 (for prime powers).
Sequence in context: A216168 A036303 A325299 * A103753 A238333 A103965
Adjacent sequences: A116452 A116453 A116454 * A116456 A116457 A116458
hard,nonn
T. D. Noe, Mar 28 2006
approved