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 A260227 #11 Jul 21 2025 00:47:00
%S A260227 3,5,53,59,353,359,593,599,953,3359,3533,3539,3559,3593,5333,5393,
%T A260227 5399,5939,5953,9533,9539,33353,33359,33533,33599,35339,35353,35393,
%U A260227 35533,35593,35933,35993,35999,39359,39953,53353,53359,53593,53939,53959,53993
%N A260227 Primes having only {3, 5, 9} as digits.
%C A260227 A020462 and A020468 are subsequences.
%H A260227 Alois P. Heinz, <a href="/A260227/b260227.txt">Table of n, a(n) for n = 1..10000</a>
%H A260227 <a href="/index/Pri#PrimesWithDigits">Index to entries for primes with digits in a given set</a>
%t A260227 Select[Prime[Range[2 10^4]], Complement[IntegerDigits[#], {3, 5, 9}]=={} &]
%t A260227 Select[Table[FromDigits/@Tuples[{3,5,9},n],{n,5}]//Flatten,PrimeQ] (* _Harvey P. Dale_, Sep 07 2018 *)
%o A260227 (Magma) [p: p in PrimesUpTo(2*10^5) | Set(Intseq(p)) subset [3, 5, 9]];
%Y A260227 Cf. similar sequences listed in A260223.
%Y A260227 Cf. A020462, A020468.
%K A260227 nonn,easy,base
%O A260227 1,1
%A A260227 _Vincenzo Librandi_, Jul 22 2015