A089683 - OEIS

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A089683

a(n) = 3^(4n).

81, 6561, 531441, 43046721, 3486784401, 282429536481, 22876792454961, 1853020188851841, 150094635296999121, 12157665459056928801, 984770902183611232881, 79766443076872509863361, 6461081889226673298932241, 523347633027360537213511521 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..14.` `Tanya Khovanova, Recursive Sequences` `Index entries for linear recurrences with constant coefficients, signature (81).`
	FORMULA	`a(n) = 81^n.` `G.f.: 81x/(1-81x). - Philippe Deléham, Nov 25 2008`
	MATHEMATICA	`3^(4Range[20]) ( or ) NestList[81#&, 81, 20] ( Harvey P. Dale, Apr 09 2012 *)`
	CROSSREFS	`Cf. A000244, A001019, A009971.` `Sequence in context: A223572 A188872 A217997 * A183506 A099372 A036515` `Adjacent sequences: A089680 A089681 A089682 * A089684 A089685 A089686`
	KEYWORD	`nonn`
	AUTHOR	`Douglas Winston (douglas.winston(AT)srupc.com), Jan 05 2004`
	EXTENSIONS	`More terms from Harvey P. Dale, Apr 09 2012`
	STATUS	`approved`

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Last modified December 4 11:15 EST 2023. Contains 367560 sequences. (Running on oeis4.)