%I A131506
%S A131506 3,5,5,5,7,7,7,7,7,9,9,9,9,9,9,9,11,11,11,11,11,11,11,11,11,13,13,13,13,
%T A131506 13,13,13,13,13,13,13,15,15,15,15,15,15,15,15,15,15,15,15,15,17,17,17,
%U A131506 17,17,17,17,17,17,17,17,17,17,17,17,19,19,19,19,19,19,19,19,19,19,19
%N A131506 2n+1 appears 2n-1 times.
%Y A131506 Sequence in context: A119280 A160585 A016658 this_sequence A113722 A141791 
               A065688
%Y A131506 Adjacent sequences: A131503 A131504 A131505 this_sequence A131507 A131508 
               A131509
%K A131506 nonn
%O A131506 1,1
%A A131506 Paul Curtz (bpcrtz(AT)free.fr), Aug 13 2007