OFFSET
1,2
COMMENTS
Smallest k such that k*prime(n) + k - 1 is a prime.
LINKS
Franklin T. Adams-Watters, Table of n, a(n) for n = 1..100
PROG
Contribution from Franklin T. Adams-Watters, May 25 2010: (Start)
(PARI) A060324(n)=forprime(q=2, 999999999, if(isprime(n*(q+1)-1), return(q))); -1
al(n)=local(v, k, xv); v=vector(n); while(n>0, xv=primepi(A060324(k++)); if(xv<=#v&v[xv]==0, v[xv]=k; n--)); v (End)
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Dec 23 2002
EXTENSIONS
More terms from Franklin T. Adams-Watters, May 25 2010
STATUS
approved