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%I #7 Dec 05 2013 19:55:47
%S 1,1,3,0,205,0,39991,0,57,5905,9090909091,0,8230246567621,0,
%T 10371206370520815,0,17361641481138401521,0,37275544492386193492507,0,
%U 22706531343006,0,326583187044036098379401213863,0,45035996273705
%N Smallest k > 0 such that nk-1 is an n-th power, or 0 if no such number exists.
%C p divides a(p) for odd primes p. a(p) = A081209(p-1) = p*A081215(p-1) for odd primes p. a(p)/p = A081215(p-1) = {1,41,5713,826446281,633095889817,1021273028302258913,...} - _Alexander Adamchuk_, Nov 12 2006
%Y Cf. A076952.
%Y Cf. A081209, A081215.
%K nonn
%O 1,3
%A _Amarnath Murthy_, Oct 20 2002
%E More terms from _Sascha Kurz_, Jan 21 2003