OFFSET
1,4
REFERENCES
R. Osborn, Tables of All Primitive Roots of Odd Primes Less Than 1000, Univ. Texas Press, Austin, TX, 1961, pp. 69-70.
MAPLE
A128861 := proc(n) local p ; p := ithprime(n+1) ; round( (numtheory[phi](p-1))^2 / (p-1) ) ; end: seq(A128861(n), n=1..70) ; # R. J. Mathar, Oct 31 2007
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Apr 20 2007
EXTENSIONS
More terms from R. J. Mathar, Oct 31 2007
STATUS
approved