|
| |
|
|
A122487
|
|
2 together with odd primes p that divide Fibonacci[(p+1)/2].
|
|
6
| |
|
|
2, 13, 17, 37, 53, 73, 97, 113, 137, 157, 173, 193, 197, 233, 257, 277, 293, 313, 317, 337, 353, 373, 397, 433, 457, 557, 577, 593, 613, 617, 653, 673, 677, 733, 757, 773, 797, 853, 857, 877, 937, 953, 977, 997, 1013, 1033, 1093, 1097, 1117, 1153, 1193, 1213
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Primes of the form 2x^2+2xy+13y^2. Discriminant=-100. - T. D. Noe (noe(AT)sspectra.com), May 02 2008
|
|
|
FORMULA
| Except for 2, the primes are congruent to {13, 17} (mod 20). - T. D. Noe (noe(AT)sspectra.com), May 02 2008
|
|
|
MATHEMATICA
| Select[Prime[Range[1000]], IntegerQ[Fibonacci[(#1+1)/2]/#1]&]
|
|
|
CROSSREFS
| Cf. A000045, A033205, A045468, A003631, A053028.
Cf. A139827.
Sequence in context: A037384 A177964 A174050 * A109181 A175448 A067522
Adjacent sequences: A122484 A122485 A122486 * A122488 A122489 A122490
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Alexander Adamchuk (alex(AT)kolmogorov.com), Sep 16 2006
|
|
|
EXTENSIONS
| Definition changed by T. D. Noe (noe(AT)sspectra.com), May 02 2008
|
| |
|
|
