A232010 Numbers k such that p^2 + k is composite for all prime p.

5, 11, 17, 21, 23, 26, 29, 31, 35, 41, 45, 47, 51, 53, 56, 59, 61, 65, 68, 71, 73, 77, 81, 83, 86, 87, 89, 91, 95, 101, 107, 110, 111, 113, 115, 116, 117, 119, 121, 125, 129, 131, 134, 137, 139, 141, 143, 146, 149, 151, 152, 155, 157, 161, 165, 167, 171, 173, 176

Offset: 1

Author

Jaroslav Krizek, Nov 20 2013

Keywords

• nonn

Comments

Primes from this sequence are in A067775.

Complement of A232012.

Examples

			7 is not in the sequence because 2^2 + 7 = 11 (prime).
		

Crossrefs

Cf. A232009, A067775, A232012, A023200.

Formula

A232009(a(n)) = 0.