A023746 - OEIS

%I #17 Oct 18 2018 21:41:28

%S 0,1,2,3,5,6,7,10,11,15,21,22,23,26,27,31,42,43,47,63,85,86,87,90,91,

%T 95,106,107,111,127,170,171,175,191,255,341,342,343,346,347,351,362,

%U 363,367,383,426,427,431,447,511,682,683,687,703,767,1023,1365,1366

%N Plaindromes: numbers whose digits in base 4 are in nondecreasing order.

%H Vincenzo Librandi, <a href="/A023746/b023746.txt">Table of n, a(n) for n = 1..500</a>

%t Select[Range[0,1366],LessEqual@@IntegerDigits[#,4]&] (* _Ray Chandler_, Jan 06 2014 *)

%K nonn,base,easy

%O 1,3

%A _Olivier Gérard_

%E Offset set to 1 by _Ray Chandler_, Jan 06 2014