A154592 - OEIS

%I #13 Sep 08 2022 08:45:40

%S 7,79,331,727,1951,2347,5479,8287,9907,10771,17827,18979,21391,22651,

%T 26647,28051,32479,42307,44071,51487,55411,57427,63691,65851,72547,

%U 77191,89431,99871,108079,113731,147391,157327,160711,171079,211867,223747,235951,252727

%N Primes of the form 2n^2+18n+7, n>=0.

%C 7 together with the primes in A154591.

%C 2*a(n) + 67 is a square. - _Vincenzo Librandi_, Apr 10 2015

%H Vincenzo Librandi, <a href="/A154592/b154592.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Table[2n^2+18n+7,{n,0,2000}],PrimeQ]

%o (Magma) [a: n in [0..400] | IsPrime(a) where a is 2*n^2+18*n+7];

%Y Cf. A154591, A142102.

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Jan 12 2009

%E Extended by _R. J. Mathar_, Jul 26 2009