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A102747 Primes p(n) such that p(n)#+p(n+1) is divisible by p(n+2). 0
2, 7, 103, 229561, 863833 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

7 belongs to this sequence since 2*3*5*7+11 is divisible by 13.

PROG

(PARI) { isgood(p) = local(r, p2, p3); p2=nextprime(p+1); p3=nextprime(p2+1); r=Mod(1, p3); forprime(q=1, p, r*=q); r+=p2; return(r==0); }

CROSSREFS

Cf. A002110, A058233.

Sequence in context: A192342 A102598 A206157 * A122524 A162634 A072664

Adjacent sequences:  A102744 A102745 A102746 * A102748 A102749 A102750

KEYWORD

hard,more,nonn

AUTHOR

Max Alekseyev (maxale(AT)gmail.com), Feb 09 2005

EXTENSIONS

863833 from Ryan Propper (rpropper(AT)cs.stanford.edu), Jan 07 2008

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Last modified February 14 17:59 EST 2012. Contains 205657 sequences.