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Composite numbers n such that the quadratic form x^2+n*y^2 does not represent a prime strictly between n and 2n.
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%I #6 Jun 22 2014 12:13:10

%S 8,24,26,35,56,68,119,120,125,134,185,194,206,290,314,326,341,356,371,

%T 404,464,489,524,545,626,635,671,698,699,749,755,815,914,978,1011,

%U 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 Composite numbers n such that the quadratic form x^2+n*y^2 does not represent a prime strictly between n and 2n.

%H 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 Cf. A244029, A244031.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Jun 22 2014