A154592 Primes of the form 2n^2+18n+7, n>=0.

7, 79, 331, 727, 1951, 2347, 5479, 8287, 9907, 10771, 17827, 18979, 21391, 22651, 26647, 28051, 32479, 42307, 44071, 51487, 55411, 57427, 63691, 65851, 72547, 77191, 89431, 99871, 108079, 113731, 147391, 157327, 160711, 171079, 211867, 223747, 235951, 252727

Offset: 1

Author

Vincenzo Librandi, Jan 12 2009

Keywords

• nonn
• easy

Comments

7 together with the primes in A154591.

2*a(n) + 67 is a square. - Vincenzo Librandi, Apr 10 2015

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A154591, A142102.

Programs

Magma

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

Mathematica

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

Extensions

Extended by R. J. Mathar, Jul 26 2009