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A071185 Smallest k such that prime(k*n)-k*prime(n) is prime. 0
7, 4, 2, 2, 2, 2, 6, 6, 4, 2, 2, 6, 2, 8, 2, 20, 4, 2, 2, 2, 6, 6, 8, 6, 6, 2, 4, 12, 2, 8, 6, 8, 2, 2, 6, 4, 2, 4, 6, 26, 24, 2, 2, 2, 4, 8, 18, 4, 2, 2, 4, 12, 4, 4, 18, 8, 6, 16, 4, 2, 2, 2, 4, 2, 2, 2, 4, 18, 6, 6, 4, 2, 4, 4, 6, 18, 2, 6, 2, 18, 4, 24, 6, 2, 6, 6, 18, 40, 2, 4, 2, 2, 18, 8, 34, 2, 2 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

PROG

(PARI) for(n=1, 210, s=1; while(isprime(prime(s*n)-s*prime(n))==0, s++); print1(s, ", "))

CROSSREFS

Sequence in context: A155531 A188628 A021578 * A165244 A198356 A019608

Adjacent sequences:  A071182 A071183 A071184 * A071186 A071187 A071188

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 10 2002

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Last modified February 16 06:08 EST 2012. Contains 205860 sequences.