A038755 - OEIS

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A038755

Earliest sequence where a(a(n))=2^n.

3, 8, 2, 256, 6, 32, 9, 4, 128, 11, 1024, 13, 4096, 15, 16384 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	LINKS	`Index entries for sequences of the a(a(n)) = 2n family`
	EXAMPLE	`a(9)=a(a(7))=2^7=128, a(16)=a(2^4)=a(a(a(4)))=a(a(256))=2^256>10^77`
	CROSSREFS	`Cf. A038756, A038757.` `Sequence in context: A094964 A197144 A138714 * A011230 A071209 A156227` `Adjacent sequences: A038752 A038753 A038754 * A038756 A038757 A038758`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), May 03 2000`

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.