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 A192226 #28 Aug 26 2015 12:21:00 %S A192226 1,28,36,96,120,121,122,123,124,125,126,146,147,148,189,190,207,208, %T A192226 209,210,219,220,221,222,249,250,292,302,303,304,305,306,326,327,328, %U A192226 329,330,346,477,478,519,520,533,534,535,536,537,538,539,540,630,672 %N A192226 Numbers n such that all integers in the interval (n-2*sqrt(sqrt(n)), n] are composite. %C A192226 a(14432) = 191913030 is probably the last term. Any further terms must be greater than 1.5 * 10^18. - _Charles R Greathouse IV_, Jun 30 2011 %H A192226 Charles R Greathouse IV, <a href="/A192226/b192226.txt">Table of n, a(n) for n = 1..14432</a> %t A192226 Select[Range[700],NextPrime[#-2Sqrt[Sqrt[#]]]>#&] (* _Harvey P. Dale_, Jul 27 2011 *) %o A192226 (PARI) is(n)=for(k=0,sqrtnint(16*n-1,4),if(isprime(n-k), return(0))); 1 \\ _Charles R Greathouse IV_, Aug 26 2015 %Y A192226 Cf. A188817, A189025, A008995. %K A192226 nonn %O A192226 1,2 %A A192226 _Juri-Stepan Gerasimov_, Jun 26 2011 %E A192226 a(12)-a(13) added, a(53)-a(56) corrected by _Charles R Greathouse IV_, Jun 30 2011