This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A023752 #22 Jan 06 2014 23:13:21 %S A023752 0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,21,24,25,26,27,28, %T A023752 29,30,31,32,36,37,38,39,40,41,42,43,48,49,50,51,52,53,54,60,61,62,63, %U A023752 64,65,72,73,74,75,76,84,85,86,87,96,97,98,108,109,120 %N A023752 Plaindromes: numbers whose digits in base 11 are in nondecreasing order. %H A023752 Harvey P. Dale, <a href="/A023752/b023752.txt">Table of n, a(n) for n = 1..1000</a> %t A023752 Select[Range[0,250],And@@NonNegative/@Differences[IntegerDigits[#,11]]&] (* _Harvey P. Dale_, Oct 20 2011 *) %t A023752 Select[Range[0,120],LessEqual@@IntegerDigits[#,11]&] (* _Ray Chandler_, Jan 06 2014 *) %Y A023752 Cf. A023746-A023757. - Omar E. Pol, Oct 20 2011 %K A023752 nonn,base,easy %O A023752 1,3 %A A023752 _Olivier Gérard_ %E A023752 Change offset to 1 by _Ray Chandler_, Jan 06 2014