The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A023749 Plaindromes: numbers whose digits in base 7 are in nondecreasing order. 4

%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_

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 8 04:55 EST 2023. Contains 367662 sequences. (Running on oeis4.)