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A216285 Primes which cannot be written as x^4+y^4. 2

%I

%S 3,5,7,11,13,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,101,

%T 103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,

%U 193,197,199,211,223,227,229,233,239,241,251,263,269,271,277,281,283,293,307,311,313,317,331,347,349,353,359,367,373,379,383,389,397

%N Primes which cannot be written as x^4+y^4.

%H Charles R Greathouse IV, <a href="/A216285/b216285.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) ~ n log n. - _Charles R Greathouse IV_, Dec 18 2014

%o (PARI) T=thueinit('x^4+1,1);

%o is(n)=#thue(T,n)==0&&isprime(n) \\ _Charles R Greathouse IV_, Dec 18 2014

%Y Cf. A002645, A002144.

%K nonn

%O 1,1

%A _V. Raman_, Sep 03 2012

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Last modified October 20 03:04 EDT 2021. Contains 348099 sequences. (Running on oeis4.)