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A232010 Numbers n such that p^2 + n is composite for all prime p. 3
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes from this sequence are in A067775.

Complement of A232012.

LINKS

Table of n, a(n) for n=1..59.

FORMULA

A232009(a(n)) = 0.

EXAMPLE

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

CROSSREFS

Cf. A232009, A067775, A232012, A023200.

Sequence in context: A084088 A314183 A314184 * A181573 A314185 A314186

Adjacent sequences:  A232007 A232008 A232009 * A232011 A232012 A232013

KEYWORD

nonn

AUTHOR

Jaroslav Krizek, Nov 20 2013

STATUS

approved

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Last modified August 24 18:12 EDT 2019. Contains 326295 sequences. (Running on oeis4.)