%I A101873
%S A101873 1,1,2,1,1,1,2,1,1,1,1,2,2,1,1,1,1,1,1,1,5,1,1,1,1,1,1,1,1,2,2,3,1,1,1,
%T A101873 1,1,1,2,1,1,1,2,1,1,1,1,3,1,1,1,1,1,1,1,1,4,1,1,1,1,2,1,1,1,2,1,1,1,1,
%U A101873 1,1,2,1,3,1,1,1,1,1,1,2,1,2,1,1,1,1,1,1,2,1,2,1,1,1,1,1,1,1,1,5,1,1,1
%N A101873 Number of Abelian groups of order 4n+1.
%Y A101873 Bisection of A101871.
%Y A101873 Sequence in context: A003650 A059233 A143898 this_sequence A146289 A079211 
               A081418
%Y A101873 Adjacent sequences: A101870 A101871 A101872 this_sequence A101874 A101875 
               A101876
%K A101873 nonn,easy
%O A101873 0,3
%A A101873 N. J. A. Sloane (njas(AT)research.att.com), Jan 28 2005
%E A101873 More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), 
               May 10 2006