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 A260051 #15 Jul 24 2015 03:52:13 %S A260051 7136,9056,30057,32076,40256,40678,46400,71125,90334,145152,150027, %T A260051 159975,166281,177315,193227,201057,207681,207843,212000,218080, %U A260051 224192,225195,229407,246777,263031,265184,297027,298144,298208,306624,318096 %N A260051 Composites whose prime factorization in base 7 is an anagram of the number in base 7. %H A260051 Giovanni Resta, <a href="/A260051/b260051.txt">Table of n, a(n) for n = 1..10000</a> %e A260051 7136 = 2^5 * 223. In base 7, 26543 = 2^5 * 436. %t A260051 Select[Range[10^5], !PrimeQ[#] && Sort@ IntegerDigits[#, 7] == Sort@ Flatten@ IntegerDigits[ Select[ Flatten@ FactorInteger@ #, #>1 &], 7] &] (* _Giovanni Resta_, Jul 14 2015 *) %Y A260051 Cf. A260046, A260047, A260048, A260049, A260050, A260052, A260053, A025283, A260054, A260055. %K A260051 base,easy,nonn %O A260051 1,1 %A A260051 _Stephen Tucker_, Jul 14 2015