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A102747 Primes p(n) such that p(n)#+p(n+1) is divisible by p(n+2). 0

%I #5 Sep 24 2013 09:21:35

%S 2,7,103,229561,863833

%N Primes p(n) such that p(n)#+p(n+1) is divisible by p(n+2).

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

%o (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); }

%Y Cf. A002110, A058233.

%K hard,more,nonn

%O 1,1

%A _Max Alekseyev_, Feb 09 2005

%E 863833 from _Ryan Propper_, Jan 07 2008

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)