A023749 - OEIS

%I #14 Apr 02 2014 06:14:06

%S 0,1,2,3,4,5,6,8,9,10,11,12,13,16,17,18,19,20,24,25,26,27,32,33,34,40,

%T 41,48,57,58,59,60,61,62,65,66,67,68,69,73,74,75,76,81,82,83,89,90,97,

%U 114,115,116,117,118,122,123,124,125,130,131,132,138,139,146,171

%N Plaindromes: numbers whose digits in base 7 are in nondecreasing order.

%H Vincenzo Librandi, <a href="/A023749/b023749.txt">Table of n, a(n) for n = 1..4000</a>

%t Select[Range[0,171],LessEqual@@IntegerDigits[#,7]&] (* _Ray Chandler_, Jan 06 2014 *)

%K nonn,base,easy

%O 1,3

%A _Olivier Gérard_