A201476 Primes of the form 2*k^2 + 9.
11, 17, 41, 59, 107, 137, 251, 347, 401, 521, 587, 809, 977, 1259, 1361, 1931, 2459, 2897, 3209, 3371, 3881, 4241, 5009, 5417, 6737, 6971, 7451, 9257, 10091, 10667, 11867, 12491, 12809, 13457, 15497, 16937, 17681, 18059, 20411, 21227, 22481, 22907, 25097, 26459
Offset: 1
Links
- Vincenzo Librandi, Table of n, a(n) for n = 1..5000
Programs
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Magma
[a: n in [0..400] | IsPrime(a) where a is 2*n^2+9];
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Mathematica
Select[Table[2n^2+9,{n,0,700}],PrimeQ]