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%I #4 May 14 2014 01:23:02
%S 1,1,0,1,2,0,1,1,0,2,2,0,1,1,0,1,2,0,1,2,0,2,2,0,1,1,0,1,2,0,1,1,0,2,
%T 2,0,1,1,0,2,2,0,1,2,0,2,2,0,1,1,0,1,2,0,1,1,0,2,2,0,1,1,0,1,2,0,1,2,
%U 0,2,2,0,1,1,0,1,2,0,1,2,0,2,2,0,1,1,0,2,2,0,1,2,0,2,2,0,1,1,0,1,2,0
%N Odd part of n modulo 3.
%C Zero if multiple of 3, one if of form 2^j(3k+1) with 3k+1 odd, two otherwise.
%o (PARI) (n>>valuation(n,2))%3 \\ _Charles R Greathouse IV_, May 14 2014
%Y Equals A010872( A000265(n) ).
%Y Cf. A099545, A099546, A099547, A099548, A099549, A099550, A099551.
%K nonn,easy
%O 1,5
%A _Ralf Stephan_, Oct 23 2004
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