id:A072258 - OEIS Search Results

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

+0
6

0, 9, 69, 405, 2133, 10581, 50517, 234837, 1070421, 4805973, 21321045, 93672789, 408245589, 1767200085, 7605671253, 32570168661, 138870609237, 589842175317, 2496807654741, 10536986432853 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Related to Collatz function (for n>0). All divisible by 3.`
	CROSSREFS	`Cf. A072257, A072259, A072260.` `Sequence in context: A024119 A120306 A089379 this_sequence A125372 A165147 A075045` `Adjacent sequences: A072255 A072256 A072257 this_sequence A072259 A072260 A072261`
	KEYWORD	`nonn`
	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 December 16 17:18 EST 2009. Contains 170825 sequences.

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