%I #4 Mar 30 2012 18:56:49
%S 13,26,39,52,65,78,91,104,117,130,143,156,158,159,160,161,162,163,164,
%T 165,166,167,312,313,315,316,317,318,319,320,321,322,323,468,469,470,
%U 472,473,474,475,476,477,478,479,624,625,626
%N Base 12 run lengths alternate: even, odd, even,...
%K nonn,base
%O 1,1
%A _Clark Kimberling_