id:A072257 - OEIS Search Results

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((6n-17)*4^n-1)/3.

+0
6

-6, -15, -27, 21, 597, 4437, 25941, 136533, 677205, 3233109, 15029589, 68506965, 307582293, 1364546901, 5995058517, 26127717717, 113100805461, 486762960213, 2084490794325, 8887718991189 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Related to Collatz function (for n>2). All divisible by 3.`
	CROSSREFS	`Cf. A072258, A072259, A072260.` `Sequence in context: A008440 A022601 A112150 this_sequence A140091 A063525 A117519` `Adjacent sequences: A072254 A072255 A072256 this_sequence A072258 A072259 A072260`
	KEYWORD	`sign`
	AUTHOR	`rathankar (rathankar(AT)yahoo.com), Jul 08 2002`
	EXTENSIONS	`Edited and extended by Henry Bottomley (se16(AT)btinternet.com), Aug 06 2002`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research