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A309136
Nonnegative integers of the form x^2+15*x*y-y^2.
0
0, 1, 4, 9, 15, 16, 25, 27, 33, 36, 37, 45, 49, 51, 53, 55, 57, 60, 64, 75, 81, 85, 95, 99, 100, 108, 121, 125, 129, 132, 135, 144, 148, 153, 165, 169, 171, 173, 180, 183, 187, 193, 196, 204, 209, 212, 213, 215, 220, 225, 228, 229, 240, 241, 243, 249, 255, 256
OFFSET
1,3
COMMENTS
Discriminant of indefinite binary quadratic form: 229.
PROG
(C++) See Jagy link.
CROSSREFS
Primes in this sequence: A141166.
Sequence in context: A243173 A345452 A313156 * A313157 A313158 A313159
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Jul 14 2019
STATUS
approved