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A087714 Primes p = prime(i) such that p(i)# - p(i+1) and p(i)# + p(i+1) are both primes, where p# = A002110. 6
5, 13, 19, 367 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Conjecture: there are only 4 primes in this sequence.

EXAMPLE

2*3*5-7 = 23 is prime, 2*3*5+7 = 37 is prime

CROSSREFS

Cf. A087715, A087716, A087728.

Sequence in context: A160031 A154634 A175866 * A055045 A184825 A190372

Adjacent sequences:  A087711 A087712 A087713 * A087715 A087716 A087717

KEYWORD

nonn

AUTHOR

Pierre CAMI (colettecami(AT)aol.com), Sep 28 2003

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Last modified February 15 08:19 EST 2012. Contains 205728 sequences.