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 A067013 #20 Apr 24 2025 15:14:33
%S A067013 1,4,6,8,9,10,12,15,18,21,22,24,25,26,27,28,33,36,39,40,42,44,45,46,
%T A067013 48,49,51,52,54,55,56,57,58,60,62,63,64,65,66,68,69,72,75,77,78,80,81,
%U A067013 82,84,85,86,87,88,90,93,94,96,99,100,102,105,108,111,114,116,117,120,122
%N A067013 Numbers with property that every permutation of digits (dropping any leading zeros) is 1 or a composite number.
%H A067013 T. D. Noe, <a href="/A067013/b067013.txt">Table of n, a(n) for n = 1..10000</a>
%e A067013 10 is a term since 10 is not a prime number and the permutation (0)1 is not a prime number either.
%t A067013 t={};Do[l1=Table[FromDigits[k],{k,Permutations[IntegerDigits[n]]}]; If[Select[l1,PrimeQ]=={},AppendTo[t,n]],{n,122}];t (* _Jayanta Basu_, May 03 2013 *)
%Y A067013 Subsequence of A248010.
%Y A067013 Cf. A067012.
%K A067013 base,nonn
%O A067013 1,2
%A A067013 _Lior Manor_, Dec 26 2001