The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A296937 Rational primes that decompose in the field Q(sqrt(13)). 4

%I #20 Apr 21 2022 21:56:21

%S 3,17,23,29,43,53,61,79,101,103,107,113,127,131,139,157,173,179,181,

%T 191,199,211,233,251,257,263,269,277,283,311,313,337,347,367,373,389,

%U 419,433,439,443,467,491,503,521,523,547,563,569,571,599,601,607,641

%N Rational primes that decompose in the field Q(sqrt(13)).

%C Is this the same sequence as A141188 or A038883? - _R. J. Mathar_, Jan 02 2018

%C From _Jianing Song_, Apr 21 2022: (Start)

%C Primes p such that Kronecker(13, p) = Kronecker(p, 13) = 1, where Kronecker() is the Kronecker symbol. That is to say, primes p that are quadratic residues modulo 13.

%C Primes p such that p^6 == 1 (mod 13).

%C Primes p == 1, 3, 4, 9, 10, 12 (mod 13). (End)

%H Jianing Song, <a href="/A296937/b296937.txt">Table of n, a(n) for n = 1..10000</a>

%H <a href="/index/Pri#primes_decomp_of">Index to sequences related to decomposition of primes in quadratic fields</a>

%F Equals A038883 \ {13}. - _Jianing Song_, Apr 21 2022

%p Load the Maple program HH given in A296920. Then run HH(13, 200); This produces A296937, A038884, A038883.

%o (PARI) isA296937(p) = isprime(p) && kronecker(p,13) == 1 \\ _Jianing Song_, Apr 21 2022

%Y Cf. A011583 (kronecker symbol modulo 13), A038883.

%Y Rational primes that decompose in the quadratic field with discriminant D: A139513 (D=-20), A191019 (D=-19), A191018 (D=-15), A296920 (D=-11), A033200 (D=-8), A045386 (D=-7), A002144 (D=-4), A002476 (D=-3), A045468 (D=5), A001132 (D=8), A097933 (D=12), this sequence (D=13), A296938 (D=17).

%Y Cf. A038884 (inert rational primes in the field Q(sqrt(13))).

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_, Dec 26 2017

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 7 00:18 EDT 2024. Contains 373138 sequences. (Running on oeis4.)