%I #6 Oct 19 2017 03:14:04

%S 27,93,309,981,2901,7509,13653

%N Numbers n for which one step of the Collatz iteration (3n+1)/2^r gives rise to values 41,35,29,23,17,11, and 5 for r=1,3,5,..,13.

%F Appears to be (( 82-12*n)*4^n-1)/3. - _Don Reble_, Oct 31 2005

%K nonn,fini,full

%O 1,1

%A N. Rathankar (rathankar(AT)yahoo.com), Jul 08 2002

%E Edited by _T. D. Noe_, Apr 10 2009