%I A010891
%S A010891 1,1,0,0,0,1,1,0,0,0,1,1,0,0,0,1,1,0,0,0,1,1,0,0,0,1,1,
%T A010891 0,0,0,1,1,0,0,0,1,1,0,0,0,1,1,0,0,0,1,1,0,0,0,1,1,0,0,
%U A010891 0,1,1,0,0,0,1,1,0,0,0,1,1,0,0,0,1,1,0,0,0,1,1,0,0,0,1
%V A010891 1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,0,1,-1,
%W A010891 0,0,0,1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,
%X A010891 0,1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,0,1,-1,0,0,0,1
%N A010891 Inverse of 5th cyclotomic polynomial.
%p A010891 with(numtheory,cyclotomic); c := n->series(1/cyclotomic(n,x),x,80);
%Y A010891 Sequence in context: A015439 A016339 A016379 this_sequence A014019 A016349 
               A016392
%Y A010891 Adjacent sequences: A010888 A010889 A010890 this_sequence A010892 A010893 
               A010894
%K A010891 sign
%O A010891 0,1
%A A010891 Simon Plouffe (simon.plouffe(AT)gmail.com)