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A309139
Primes of the form 3*x^2 + 2*x*y + 8*y^2.
1
3, 13, 41, 71, 127, 139, 179, 257, 269, 311, 331, 409, 439, 443, 461, 541, 587, 673, 739, 761, 823, 887, 967, 1051, 1061, 1087, 1129, 1153, 1223, 1237, 1277, 1373, 1381, 1409, 1427, 1439, 1567, 1619, 1733, 1741, 1783, 1933, 1973, 2017, 2063, 2083, 2203, 2239, 2417
OFFSET
1,1
COMMENTS
Primes in A028960.
Discriminant of positive definite binary quadratic form: -92.
LINKS
Peter Luschny, Binary Quadratic Forms
N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)
CROSSREFS
Cf. A028960. Subsequence of A106866.
Sequence in context: A360787 A095109 A259764 * A049167 A241527 A234387
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Jul 14 2019
STATUS
approved