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A309134
Nonnegative integers of the form x^2+12*x*y-y^2.
0
0, 1, 4, 9, 12, 16, 21, 25, 27, 28, 33, 36, 37, 44, 48, 49, 63, 64, 67, 77, 81, 84, 99, 100, 107, 108, 112, 121, 123, 132, 137, 139, 141, 144, 147, 148, 151, 159, 164, 169, 176, 188, 189, 192, 196, 212, 213, 219, 225, 231, 233, 243, 249, 252, 256, 268, 269, 284
OFFSET
1,3
COMMENTS
Discriminant of indefinite binary quadratic form: 148.
PROG
(C++) See Jagy link.
CROSSREFS
Primes in this sequence: A141163.
Sequence in context: A010449 A210607 A312857 * A312858 A312859 A362401
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Jul 14 2019
STATUS
approved