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A081717
Primes prime(j) such that prime(j) + j is composite.
1
5, 11, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 67, 71, 73, 83, 97, 103, 107, 109, 113, 127, 137, 149, 151, 157, 163, 167, 173, 179, 191, 193, 197, 199, 211, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 331, 337, 347
OFFSET
1,1
LINKS
EXAMPLE
127 is the 31st prime and 127+31 = 158 is composite.
MATHEMATICA
Do[s=Prime[n]+n; If[ !PrimeQ[s], Print[Prime[n]]], {n, 1, 100}]
CROSSREFS
Sequence in context: A220432 A266420 A317048 * A096264 A239709 A175249
KEYWORD
nonn
AUTHOR
Labos Elemer, Apr 02 2003
STATUS
approved