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A128659
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).
+0
6
3, 4, 5, 6, 7, 9, 13, 14, 20, 30, 40, 44, 86, 101, 135, 152, 171, 205, 4404
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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