%I A023131
%S A023131 1,2,3,1,4,2,5,3,6,1,4,7,2,5,8,3,6,9,1,4,7,10,2,5,8,11,3,6,9,12,1,4,
%T A023131 7,10,13,2,5,8,11,14,3,6,9,12,15,1,4,7,10,13,16,2,5,8,11,14,17,3,6,
%U A023131 9,12,15,1,18,4,7,10,13,16,2,19,5,8,11,14,17,3,20,6,9,12,15,1,18,4
%N A023131 Signature sequence of sqrt(8) (arrange the numbers i+j*x (i,j >= 1) in 
               increasing order; the sequence of i's is the signature of x).
%D A023131 C. Kimberling, "Fractal Sequences and Interspersions", Ars Combinatoria, 
               vol. 45 p 157 1997.
%H A023131 T. D. Noe, <a href="b023131.txt">Table of n, a(n) for n=1..1000</a>
%H A023131 C. Kimberling, <a href="http://faculty.evansville.edu/ck6/integer/intersp.html">
               Interspersions</a>
%Y A023131 Sequence in context: A023119 A118276 A023123 this_sequence A026276 A152201 
               A120873
%Y A023131 Adjacent sequences: A023128 A023129 A023130 this_sequence A023132 A023133 
               A023134
%K A023131 nonn
%O A023131 1,2
%A A023131 Clark Kimberling (ck6(AT)evansville.edu)