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%I #8 Sep 06 2021 15:31:01
%S 1,24,12,6,3,70,35,806,403,9270,4635,106606,53303,1225970,612985,
%T 14098656,7049328,3524664,1762332,881166,440583,10133410,5066705,
%U 116534216,58267108,29133554,14566777
%N Trajectory of 1 under map n->23n+1 if n odd, n->n/2 if n even
%p N:= 100: # to get a(0) to a(N)
%p A[0]:= 1:
%p for n from 1 to N do
%p if A[n-1]::even then A[n]:= A[n-1]/2
%p else A[n]:= 23*A[n-1]+1
%p fi
%p od:
%p seq(A[i],i=0..N); # _Robert Israel_, Nov 21 2014
%t NestList[If[OddQ[#],23#+1,#/2]&,1,30] (* _Harvey P. Dale_, Sep 06 2021 *)
%K nonn
%O 0,2
%A _N. J. A. Sloane_.
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