A081651 - OEIS

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A081651

a(n) = floor((3/2)^^n), where x^^n is the power tower x^(x^(...^x)) with n x's.

1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 5, 10, 86, 1499263005586576 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,4`
	LINKS	`Table of n, a(n) for n=0..13.`
	MATHEMATICA	`f[n_] := (3/2)^n; Floor[ NestList[f, 3/2, 12]]`
	CROSSREFS	`Cf. A014221.` `Sequence in context: A275882 A005139 A005134 * A269333 A029193 A308052` `Adjacent sequences: A081648 A081649 A081650 * A081652 A081653 A081654`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v, Mar 26 2003`
	EXTENSIONS	`New definition from Benoit Jubin, Jul 22 2008` `Inserted a missing 1 at the beginning, Benoit Jubin, Aug 04 2008`
	STATUS	`approved`

Last modified March 7 19:13 EST 2021. Contains 341928 sequences. (Running on oeis4.)