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A101871 Number of Abelian groups of order 2n+1. 2
1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1 (list; graph; refs; listen; history; internal format)
OFFSET

0,5

CROSSREFS

Bisection of A000688.

Sequence in context: A147753 A116531 * A101875 A081387 A204125 A204127

Adjacent sequences:  A101868 A101869 A101870 * A101872 A101873 A101874

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jan 28 2005

EXTENSIONS

More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 10 2006

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Last modified February 17 11:46 EST 2012. Contains 206011 sequences.