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%I #10 Feb 01 2023 08:17:46
%S 19,53,61,101,107,251,269,311,347,419,499,521,547,563,587,673,677,691,
%T 877,937,953,1031,1061,1087,1229,1249,1259,1427,1433,1693,1733,1753,
%U 1777,1831
%N Primes p such that 2*p^2 is not in A066721.
%H David Applegate, <a href="/A066721/a066721.txt">First 10000 terms of A066721 and their factorizations</a>
%K nonn,more
%O 1,1
%A _David Applegate_, _N. J. A. Sloane_, Jan 18 2002
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