id:A152298 - OEIS Search Results

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A threes sequence that gets more even factors out: a(n)=(3^n - 1)/(2^(3 - 2*Mod[n, 2])).

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0, 1, 1, 13, 10, 121, 91, 1093, 820, 9841, 7381, 88573, 66430, 797161, 597871, 7174453, 5380840, 64570081, 48427561, 581130733, 435848050, 5230176601, 3922632451, 47071589413, 35303692060, 423644304721, 317733228541 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`a(n)=(3^n - 1)/(2^(3 - 2*Mod[n, 2])).`
	MATHEMATICA	`Clear[a, n];` `a[n_] := (3^n - 1)/(2^(3 - 2*Mod[n, 2]));` `Table[a[n], {n, 0, 30}]`
	CROSSREFS	`A003462` `Sequence in context: A066552 A072270 A094813 this_sequence A158956 A160130 A083229` `Adjacent sequences: A152295 A152296 A152297 this_sequence A152299 A152300 A152301`
	KEYWORD	`nonn`
	AUTHOR	`Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Dec 02 2008`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

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