A139480 - OEIS

This site is supported by donations to The OEIS Foundation.

A139480

A000043(n) - 3.

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; refs; listen; history; internal format)

	OFFSET	`2,2`
	COMMENTS	`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 * A152749 A081115 A053417` `Adjacent sequences: A139477 A139478 A139479 * 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`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 23:53 EST 2012. Contains 205689 sequences.