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 A386247 #17 Jul 19 2025 16:11:07 %S A386247 10007,10009,40009,70001,70003,70009,90001,90007,100003,100019,100043, %T A386247 100049,100057,100069,130003,140009,150001,160001,160009,170003, %U A386247 180001,180007,200003,200009,200017,200023,200029,200033,200041,200063,200087,220009,230003,240007 %N A386247 Primes containing 000 as a substring. %C A386247 Differs from A164968 first at n=10: a(10) = 100019 < 200003 = A164968(10). %H A386247 Alois P. Heinz, <a href="/A386247/b386247.txt">Table of n, a(n) for n = 1..20761</a> %t A386247 Select[Prime[Range[1230, 25000]], StringContainsQ[IntegerString[#], "000"] &] (* _Paolo Xausa_, Jul 19 2025 *) %Y A386247 Cf. A000040, A164968, A243527, A166580, A166581, A166582, A167281, A131645, A167282, A167290, A167292, A386240. %K A386247 nonn,base,easy %O A386247 1,1 %A A386247 _Alois P. Heinz_, Jul 16 2025