%I A023768
%S A023768 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,26,27,28,39,40,41,42,52,53,54,55,
%T A023768 56,65,66,67,68,69,70,78,79,80,81,82,83,84,91,92,93,94,95,96,97,98,
%U A023768 104,105,106,107,108,109,110,111,112,117,118,119,120,121,122,123
%N A023768 Nialpdromes: digits in base 13 are in descending order.
%Y A023768 Sequence in context: A078107 A072089 A072088 this_sequence A023795 A032949 
               A094275
%Y A023768 Adjacent sequences: A023765 A023766 A023767 this_sequence A023769 A023770 
               A023771
%K A023768 nonn,base,easy
%O A023768 0,3
%A A023768 Olivier Gerard (olivier.gerard(AT)gmail.com)