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A072253
Numbers n for which one step of the Collatz iteration (3n+1)/2^r gives rise to values 59,53,47,41,35,29,23,17,11 and 5 for r=1,3,5,..,19.
0
39, 141, 501, 1749, 5973, 19797, 62805, 185685, 480597, 873813
OFFSET
1,1
FORMULA
Appears to be ((118-12*n)*4^n-1)/3. - Don Reble, Oct 31 2005
CROSSREFS
Sequence in context: A118634 A044371 A044752 * A128826 A240902 A158593
KEYWORD
nonn,fini,full
AUTHOR
N. Rathankar (rathankar(AT)yahoo.com), Jul 08 2002
EXTENSIONS
Extended and edited by T. D. Noe, Apr 10 2009
STATUS
approved