OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Dirichlet's Theorem
EXAMPLE
n=4, prime(4)=7, a(4)=4 as: 1->8->15->22->29, 2->9->16->23,
3->10->17, 4->11, 5->12->19, 6->13.
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jan 10 2004
STATUS
approved