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%I #17 Jun 28 2023 10:26:22
%S 2,3,7,37,43,53,79,89,107,113,1471,1579,1663,3491,3547,3659,3691,3719,
%T 3779,3821,3823,3851,3947,3989,4079,4583,4657,4679,4703,27271,28643,
%U 28661,28663,28711,29021,29023,41603,41641,41651,41669,41999,42443,42787,42899,44249,44263,44279,45971,50599,50909,56053,57041
%N Union of 2, A282178, and A330339.
%C Equivalently, primes that occur in columns 0, 1, or 2 of the triangle in A330339. [Corrected by _Walter Trump_, Dec 23 2019]
%C The asymptotic behavior of A282178 and A330339 is a mystery. It is not even known if they are infinite. They are closely related. A282178 contains primes == 3 mod 4, and A330339 primes == 1 mod 4. Perhaps by combining them in this way some properties will become more visible.
%H Giovanni Resta, <a href="/A330554/b330554.txt">Table of n, a(n) for n = 1..25000</a> (first 1269 terms from N. J. A. Sloane)
%Y Cf. A282178, A330339, A330545, A330547.
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Dec 22 2019
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