A037109 - OEIS

%I #6 Nov 21 2014 17:26:08

%S 3,70,35,806,403,9270,4635,106606,53303,1225970,612985,14098656,

%T 7049328,3524664,1762332,881166,440583,10133410,5066705,116534216,

%U 58267108,29133554,14566777,335035872

%N Trajectory of 3 under map n->23n+1 if n odd, n->n/2 if n even

%F a(n) = A033968(n+4). - _R. J. Mathar_, Nov 21 2014

%K nonn

%O 0,1

%A _N. J. A. Sloane_.