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A147297 Primes of the form (2k)^2 + 3(2k + 1)^2. 1

%I

%S 31,307,463,1123,1723,3307,4831,6007,8011,10303,11131,13807,20023,

%T 23563,26083,30103,35911,43891,60271,86143,95791,108571,127807,136531,

%U 145543,164431,205663,239611,276151,284623,288907,366631,371491,386263,459007

%N Primes of the form (2k)^2 + 3(2k + 1)^2.

%o (Maxima) makelist((2*k)^2+3*(2*k+1)^2,k,1,100)$ sublist(%,primep);

%o (MAGMA) [ a: n in [1..900] | IsPrime(a) where a is (2*n)^2 + 3*(2*n+1)^2] // _Vincenzo Librandi_, Nov 25 2010

%Y First thirteen terms are a subset of A073337, A002383 and A085104.

%K nonn

%O 1,1

%A _Kieren MacMillan_, Nov 05 2008

%E More terms from _Vincenzo Librandi_, Apr 28 2010

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Last modified September 26 21:46 EDT 2020. Contains 337377 sequences. (Running on oeis4.)