%I A026276
%S A026276 1,2,3,1,4,2,5,3,6,7,4,8,9,5,10,11,6,12,7,13,14,8,15,9,16,17,
%T A026276 10,18,11,19,20,12,21,22,13,23,14,24,25,15,26,27,16,28,17,29,
%U A026276 30,18,31,32,19,33,20,34,35,21,36,22,37,38,23,39,40,24,41,25
%N A026276 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 A026276 Cf. A009947.
%Y A026276 Sequence in context: A118276 A023123 A023131 this_sequence A152201 A120873 
               A125161
%Y A026276 Adjacent sequences: A026273 A026274 A026275 this_sequence A026277 A026278 
               A026279
%K A026276 nonn
%O A026276 1,2
%A A026276 Clark Kimberling (ck6(AT)evansville.edu)