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 A281093 #27 Jul 21 2025 18:57:21
%S A281093 3,7,37,43,47,73,79,97,337,347,349,373,379,397,433,439,443,449,479,
%T A281093 499,733,739,743,773,797,937,947,977,997,3343,3347,3373,3433,3449,
%U A281093 3499,3733,3739,3779,3793,3797,3943,3947,4337,4339,4349,4373,4397,4447,4493,4733
%N A281093 Primes having only {3, 4, 7, 9} as digits.
%C A281093 The Fibonacci prime 433494437 is in this sequence.
%C A281093 These are primes that only use digits that survived in the movie 9: {3, 4, 7, 9}.
%H A281093 Jason Bard, <a href="/A281093/b281093.txt">Table of n, a(n) for n = 1..10000</a>
%H A281093 Wikipedia, <a href="https://en.wikipedia.org/wiki/9_(2009_animated_film)">9 (2009 animated film)</a>
%H A281093 <a href="/index/Pri#PrimesWithDigits">Index to entries for primes with digits in a given set</a>
%F A281093 a(n) >> n^k, where k = log(10)/log(4) = 1.660964.... - _Charles R Greathouse IV_, Jan 24 2017
%o A281093 (PARI) is(n)=#setunion(Set(digits(n)), [3,4,7,9])==4 && isprime(n) \\ _Charles R Greathouse IV_, Jan 24 2017
%Y A281093 Cf. A091633.
%K A281093 base,nonn
%O A281093 1,1
%A A281093 _Bobby Jacobs_, Jan 24 2017