|
| |
|
|
A139846
|
|
Primes of the form 5x^2+21y^2.
|
|
0
| |
|
|
5, 41, 89, 101, 269, 461, 509, 521, 761, 881, 929, 941, 1049, 1109, 1181, 1301, 1361, 1601, 1721, 1889, 1949, 2141, 2309, 2441, 2609, 2621, 2729, 2789, 2861, 3041, 3209, 3449, 3461, 3701, 3821, 3881, 3989, 4049, 4241, 4289, 4409, 4721, 4889
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Discriminant=-420. See A139827 for more information.
|
|
|
FORMULA
| The primes are congruent to {5, 41, 89, 101, 209, 269, 341} (mod 420).
|
|
|
MATHEMATICA
| QuadPrimes[5, 0, 21, 10000] (* see A106856 *)
|
|
|
CROSSREFS
| Sequence in context: A203018 A199692 A031917 * A201718 A142101 A102265
Adjacent sequences: A139843 A139844 A139845 * A139847 A139848 A139849
|
|
|
KEYWORD
| nonn,easy
|
|
|
AUTHOR
| T. D. Noe (noe(AT)sspectra.com), May 02 2008
|
| |
|
|
