| 2, 7, 23, 31, 47, 71, 73, 79, 89, 103, 113, 127, 151, 167, 191, 199, 223, 233, 239, 257, 263, 271, 281, 311, 337, 353, 359, 367, 383, 431, 439, 463, 479, 487, 503, 577, 593, 599, 601, 607, 617, 631, 647, 719, 727, 743, 751, 823, 839, 863, 881, 887, 911, 919
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
For a prime p congruent to 1 mod 8, 2 is a biquadratic residue mod p if and only if there are integers x,y such that x^2 + 64 y^2 = p. 2 is also a biquadratic residue mod 2 and mod p for any prime p congruent to 7 mod 8, and for no other primes. - Fred W. Helenius (fredh(AT)ix.netcom.com), Dec 30 2004
|
|
LINKS
|
T. D. Noe, Table of n, a(n) for n=1..1000
Author?, Title?
Index entries for related sequences
|
|
CROSSREFS
|
Cf. A001132, A040028, A045315.
Sequence in context: A122631 A045381 A042145 this_sequence A045315 A072935 A049564
Adjacent sequences: A040095 A040096 A040097 this_sequence A040099 A040100 A040101
|
|
KEYWORD
|
nonn,nice,easy
|
|
AUTHOR
|
njas
|
|
