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A072253 These are the strips of odd numbers(T) in the odd family (values of r) which on operation with the operator (3T+1)/2^r gives rise to values as 59,53,47,41,35,29,23,17,11 and 5 for increasing values of r starting from r=1 to r=19.This i call it as third strip of numbers. +0
1
39, 141, 501, 1749, 5973, 19797, 62805, 185685 (list; graph; listen)
OFFSET

1,1

COMMENT

Related to Collatz conjecture.

FORMULA

Appears to be ((118-12*n)*4^n-1)/3. - Don Reble (djr(AT)nk.ca), Oct 31 2005

CROSSREFS

Adjacent sequences: A072250 A072251 A072252 this_sequence A072254 A072255 A072256

Sequence in context: A118634 A044371 A044752 this_sequence A128826 A105838 A124619

KEYWORD

nonn,uned

AUTHOR

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

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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