Search: id:A117656
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%I A117656
%S A117656 1,2,3,4,5,6,7,6,9,10,11,12,13,14,15,12,17,18,19,20,21,22,23,18,25,26,
%T A117656 21,28,29,30,31,20,33,34,35,36,37,38,39,30,41,42,43,44,45,46,47,36,49,
%U A117656 50,51,52,53,42,55,42,57,58,59,60,61,62,63,40,65,66,67,68,69,70,71,54
%N A117656 Number of solutions to x^(k+2)=x^2 mod n for some k>=1.
%H A117656 S. R. Finch, <a href="http://arXiv.org/abs/math.NT/0605019">Idempotents 
               and Nilpotents Modulo n</a> (arXiv:math.NT/0605019)
%Y A117656 Sequence in context: A161658 A066853 A141258 this_sequence A101918 A132125 
               A102672
%Y A117656 Adjacent sequences: A117653 A117654 A117655 this_sequence A117657 A117658 
               A117659
%K A117656 mult,nonn
%O A117656 1,2
%A A117656 S. R. Finch (Steven.Finch(AT)inria.fr), Apr 11 2006

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