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 A175471 #7 Dec 31 2013 17:08:05 %S A175471 3,24,26,76,83,87,236,264,313,314,316,766,816,824,834,836,883,887,937, %T A175471 2366,2383,2387,2424,2563,2626,2976,3114,7613,7666,8117,8167,8184, %U A175471 8234,8286,8366,8716,8813,8814,8887,8937,9266,9316,9363,9417,9474,9786,9833 %N A175471 Numbers n such that n^2 contains no digit less than 5. %t A175471 Select[Range[10000],Min[IntegerDigits[#^2]]>4&] (* _Harvey P. Dale_, Dec 31 2013 *) %o A175471 (PARI) isok(n) = vecmin(digits(n^2)) > 4; \\ _Michel Marcus_, Oct 15 2013 %Y A175471 Cf. A158082, A158304. %K A175471 base,nonn %O A175471 1,1 %A A175471 _Zak Seidov_, May 24 2010