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 A244030 #6 Jun 22 2014 12:13:10 %S A244030 8,24,26,35,56,68,119,120,125,134,185,194,206,290,314,326,341,356,371, %T A244030 404,464,489,524,545,626,635,671,698,699,749,755,815,914,978,1011, %U A244030 1141,1161,1190,1205,1232,1316,1529,1595,1634,1760,1784,2021,2546,3419,3464,3485,3561,3674,3746,3806,4094,4616,4904,6041,7061,7556,8876,9974,12326,17531,17786,43181 %N A244030 Composite numbers n such that the quadratic form x^2+n*y^2 does not represent a prime strictly between n and 2n. %H A244030 William C. Jagy and Irving Kaplansky, <a href="/A244019/a244019.pdf">Positive definite binary quadratic forms that represent the same primes</a> [Cached copy] %Y A244030 Cf. A244029, A244031. %K A244030 nonn %O A244030 1,1 %A A244030 _N. J. A. Sloane_, Jun 22 2014