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%I #3 Mar 30 2012 16:47:44
%S 3,82,41,1108,554,277,7480,3740,1870,935,25246,12623,340822,170411,
%T 4601098,2300549,62114824,31057412,15528706,7764353,209637532,
%U 104818766,52409383,1415053342,707526671,19103220118
%N Trajectory of 3 under map n->27n+1 if n odd, n->n/2 if n even
%K nonn
%O 0,1
%A _N. J. A. Sloane_.