id:A139480 - OEIS Search Results

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A000043(n) - 3.

+0
4

0, 2, 4, 10, 14, 16, 28, 58, 86, 104, 124, 518, 604, 1276, 2200, 2278, 3214, 4250, 4420, 9686, 9938, 11210, 19934, 21698, 23206, 44494, 86240, 110500, 132046, 216088, 756836, 859430, 1257784, 1398266, 2976218, 3021374, 6972590, 13466914 (list; graph; listen)

	OFFSET	`2,2`
	COMMENT	`2^a(n)-1 is divisible by 3. For (2^a(n)-1)/3 see A124477.` `For a(n)/2 see A139481.`
	CROSSREFS	`Cf. A000043, A000668, A124477, A139479, A139481.` `Sequence in context: A056718 A057283 A107992 this_sequence A152749 A081115 A053417` `Adjacent sequences: A139477 A139478 A139479 this_sequence A139481 A139482 A139483`
	KEYWORD	`nonn`
	AUTHOR	`Artur Jasinski (grafix(AT)csl.pl), Apr 22 2008`
	EXTENSIONS	`Definition corrected by Omar E. Pol, May 23 2008` `Edited by N. J. A. Sloane (njas(AT)research.att.com), May 23 2008`

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.

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