A186815 Numbers n such that n^2-10 is a prime.

9, 21, 27, 39, 51, 69, 81, 87, 99, 117, 129, 147, 153, 171, 177, 183, 207, 219, 249, 261, 309, 333, 351, 363, 387, 393, 399, 429, 441, 447, 459, 471, 477, 483, 519, 537, 561, 597, 609, 621, 633, 639, 651, 663, 687, 711, 717, 723, 741, 753, 777, 807, 849

Offset: 1

Author

Vladimir Joseph Stephan Orlovsky, Feb 27 2011

Keywords

• nonn
• easy

Examples

			9^2-10=71 prime.
		

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A090696, A114273.

Programs

Magma

[n: n in [1..1000] | IsPrime(n^2-10)]; // Vincenzo Librandi, Jul 10 2016

Mathematica

Select[Range[4,1200],PrimeQ[#^2-10]&]