OFFSET
1,6
COMMENTS
Values of c are in A188366.
For n = 9, 13, and 16 (c+kb)*prime(n)#-1 is prime for k=10 as well.
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Pierre CAMI, Mar 29 2011
EXTENSIONS
More terms from Pierre CAMI
STATUS
approved