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A084866 Primes that can be written in the form 2*p^2 + 3*q^2 with p and q prime. 4
83, 173, 197, 269, 317, 389, 461, 557, 653, 701, 797, 941, 1091, 1109, 1181, 1229, 1637, 1709, 1949, 1997, 2069, 2141, 2309, 2531, 2549, 2621, 2789, 2861, 3221, 3389, 3461, 3581, 3821, 4157, 4229, 4349, 4493, 5051, 5261, 5381, 5501, 5693 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A084864 and of A084865; A084863(a(n))>0.

LINKS

Table of n, a(n) for n=1..42.

EXAMPLE

A000040(40) = 173 = 98 + 75 = 2*7^2 + 3*5^2 = 2*A000040(4)^2 + 3*A000040(3)^2, therefore 173 is a term.

CROSSREFS

Sequence in context: A246874 A136079 A118359 * A142332 A111078 A106962

Adjacent sequences:  A084863 A084864 A084865 * A084867 A084868 A084869

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jun 10 2003

STATUS

approved

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Last modified September 19 15:08 EDT 2019. Contains 327198 sequences. (Running on oeis4.)