%I A026354
%S A026354 1,2,3,3,4,5,4,6,5,7,8,6,9,10,7,11,8,12,13,9,14,10,15,16,11,17,
%T A026354 18,12,19,13,20,21,14,22,23,15,24,16,25,26,17,27,18,28,29,19,
%U A026354 30,31,20,32,21,33,34,22,35,23,36,37,24,38,39,25,40,26,41,42
%N A026354 a(n) = a(m) if a(m) has already occurred exactly once and n = a(m)+m-2, 
               else a(n) = least positive integer that has not yet occurred.
%Y A026354 Cf. A026272.
%Y A026354 Sequence in context: A089308 A115729 A115728 this_sequence A078338 A007306 
               A140858
%Y A026354 Adjacent sequences: A026351 A026352 A026353 this_sequence A026355 A026356 
               A026357
%K A026354 nonn
%O A026354 1,2
%A A026354 Clark Kimberling (ck6(AT)evansville.edu)