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A077007
Primes (k) such that prime(k)*prime(k+1) + 1 or prime(k)*prime(k+1)- 1 is divisible by prime(k+2).
0
2, 3, 7, 17, 31, 1321
OFFSET
0,1
COMMENTS
a(7) > 1e8.
EXAMPLE
7 is a member as 13 divides 7*11 + 1 = 78. 17 is a member as 23 divides 17*19 -1 = 322.
CROSSREFS
Sequence in context: A349665 A030086 A078721 * A158498 A267601 A155548
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Oct 26 2002
EXTENSIONS
One more term from Ralf Stephan, Oct 31 2002
STATUS
approved