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A244030
Composite numbers n such that the quadratic form x^2+n*y^2 does not represent a prime strictly between n and 2n.
3
8, 24, 26, 35, 56, 68, 119, 120, 125, 134, 185, 194, 206, 290, 314, 326, 341, 356, 371, 404, 464, 489, 524, 545, 626, 635, 671, 698, 699, 749, 755, 815, 914, 978, 1011, 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
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..67.
William C. Jagy and Irving Kaplansky, Positive definite binary quadratic forms that represent the same primes [Cached copy]
CROSSREFS
Cf. A244029, A244031.
Sequence in context: A052349 A254448 A029607 * A375432 A374590 A325990
Adjacent sequences: A244027 A244028 A244029 * A244031 A244032 A244033
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 22 2014
STATUS
approved

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Last modified October 5 03:10 EDT 2024. Contains 376530 sequences.
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