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%I #9 Jul 17 2012 03:12:02
%S 0,10,50,250,1250,6250,31250,156250,781250,3906250,19531250,97656250,
%T 488281250,2441406250,12207031250,61035156250,305175781250,
%U 1525878906250,7629394531250,38146972656250,190734863281250
%N Numbers n such that n-th Pisano number = 6*n.
%C Period of Fibonacci sequence(mod m)<=6*m.
%C Effectively the same as A020699 and A020729 apart from the initial terms. [From _Carl R. White_, Sep 22 2009]
%H K. S. Brown, <a href="http://www.mathpages.com/home/kmath078/kmath078.htm">Periods of Fibonacci Sequences Mod m</a>
%F a(0) = 0, a(1) = 10, a(n) = 5*a(n-1); a(n) = sgn(n)*2*5^n [From _Carl R. White_, Sep 22 2009]
%Y Cf. A001175.
%K nonn
%O 1,2
%A _Lekraj Beedassy_, Jul 05 2004
%E More terms from _Carl R. White_, Sep 22 2009
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