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A176236 Numbers n such that one of nonnegative nonprime(n)-2 or nonnegative nonprime(n)+2 is prime. 0
1, 2, 3, 17, 19, 23, 25, 35, 37, 40, 42, 46, 48, 55, 57, 63, 65, 68, 72, 86, 96, 102, 104, 108, 114, 118, 120, 123, 125, 131, 133, 136, 138, 142, 148, 156, 164, 167, 175, 185, 187, 191, 197, 200, 202, 205, 207, 210, 212, 216, 218, 225, 231, 234, 244, 254, 264 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Exactly one of A141468(n)-2 and A141468(n)+2 is prime.
LINKS
EXAMPLE
a(1)=1 because nonnegative nonprime(1)-2=-2=negative nonprime and nonnegative nonprime(1)+2=2=prime.
CROSSREFS
Sequence in context: A078201 A361104 A090913 * A171139 A291281 A135931
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from R. J. Mathar, Apr 16 2010
STATUS
approved

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Last modified May 23 18:13 EDT 2024. Contains 372765 sequences. (Running on oeis4.)