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A128660
Numbers n such that p(n+1)#-p(n)#-p(n-1)#+1 is prime where p(i)#=product of first i primes=A002110(i).
5
2, 6, 14, 15, 23, 31, 97, 144, 983, 2587, 3163, 6689
OFFSET
1,1
MATHEMATICA
Flatten[Position[#[[3]]-#[[2]]-#[[1]]+1&/@Partition[FoldList[Times, 1, Prime[ Range[ 6700]]] , 3, 1], _?PrimeQ]] (* Harvey P. Dale, Jul 25 2013 *)
KEYWORD
nonn
AUTHOR
Pierre CAMI, Mar 19 2007
STATUS
approved