A074230 Numbers n such that A089509(n)=1.

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 25, 27, 29, 31, 32, 36, 37, 38, 47, 48, 50, 53, 54, 55, 57, 58, 59, 62, 64, 65, 72, 74, 75, 76, 81, 83, 85, 87, 93, 94, 96, 100, 103, 106, 108, 109, 110, 111, 113, 114, 115, 116, 118, 121, 124, 128, 130, 131, 137, 139

Offset: 1

Author

Jon Perry, Sep 17 2002

Keywords

• nonn

Comments

The original name was: Kronecker(7,y) == mu(gcd(7,y)).

Links

• Matthew House, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A089509.

Programs

Maple

select(t -> numtheory:-jacobi(7,t)=1, [$1..1000]); # Robert Israel, Jul 24 2016

PARI

for (x=1,200, for (y=1,200,if (kronecker(x,y) == moebius(gcd(x,y)),write("km.txt",x,";",y," : ",kronecker(x,y)))))

Extensions

Name simplified by Robert Israel, Jul 24 2016.