|
Search: id:A047650
|
|
|
| A047650 |
|
Primes for which golden mean tau is a quadratic residue. |
|
+0
9
|
|
| 29, 89, 101, 181, 229, 349, 401, 461, 509, 521, 541, 709, 761, 769, 809, 941, 1009, 1021, 1049, 1061, 1109, 1229, 1249, 1289, 1361, 1409, 1549, 1601, 1621, 1669, 1709, 1721, 1741, 1789, 1861, 2029, 2069, 2081, 2089, 2389, 2441, 2621, 2729, 2801, 2861
(list; graph; listen)
|
|
|
OFFSET
|
0,1
|
|
|
COMMENT
|
Primes of the form x^2+20y^2. - T. D. Noe (noe(AT)sspectra.com), May 08 2005
Also primes p that divide sum of cubes of first (p-1)/2 Fibonacci numbers A005968[(p-1)/2]. - Alexander Adamchuk (alex(AT)kolmogorov.com), Aug 07 2006
|
|
REFERENCES
|
E. Lehmer, On the quadratic character of the Fibonacci root, Fib. Quart., 4 (1966), 135-138.
|
|
CROSSREFS
|
Cf. A047651, A001583.
Cf. A005968.
Sequence in context: A042656 A042658 A042660 this_sequence A141883 A142791 A107940
Adjacent sequences: A047647 A047648 A047649 this_sequence A047651 A047652 A047653
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
njas
|
|
EXTENSIONS
|
More terms from James A. Sellers (sellersj(AT)math.psu.edu), Jan 25 2000
|
|
|
Search completed in 0.002 seconds
|
