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 A386143 #6 Jul 17 2025 22:42:31
%S A386143 2,3,23,29,43,223,229,233,239,293,349,433,439,443,449,499,929,2239,
%T A386143 2243,2293,2333,2339,2393,2399,2423,2939,2999,3229,3299,3323,3329,
%U A386143 3343,3433,3449,3499,3923,3929,3943,4229,4243,4339,4349,4423,4493,4933,4943,4993,4999
%N A386143 Primes having only {2, 3, 4, 9} as digits.
%H A386143 Jason Bard, <a href="/A386143/b386143.txt">Table of n, a(n) for n = 1..10000</a>
%H A386143 <a href="/index/Pri#PrimesWithDigits">Index to entries for primes with digits in a given set</a>
%t A386143 Flatten[Table[Select[FromDigits /@ Tuples[{2, 3, 4, 9}, n], PrimeQ], {n, 7}]]
%o A386143 (Magma) [p: p in PrimesUpTo(10^6) | Set(Intseq(p)) subset [2, 3, 4, 9]];
%o A386143 (Python) print(list(islice(primes_with("2349"), 41))) # uses function/imports in A385776
%o A386143 (PARI) primes_with(, 1, [2, 3, 4, 9]) \\ uses function in A385776
%Y A386143 Supersequence of A199342, A199349, A260128, A385785.
%Y A386143 Cf. A000040, A385776.
%K A386143 nonn,base,easy
%O A386143 1,1
%A A386143 _Jason Bard_, Jul 17 2025