A192037 Generalized Euler phi function (for p=5).

1, 16, 96, 256, 2500, 9216, 62496, 147456, 1499904, 6250000, 39037504, 84934656, 971882496, 3905750016, 23437500000, 57415827456, 610351562496, 2249712009216, 15258773437504, 39062500000000, 366140629499904, 1523926718550016, 9536743164062496, 16231265527136256, 238418579101562500

Offset: 1

Author

Joerg Arndt, Jul 03 2011

Keywords

• nonn

Comments

For n>=2 a(n) is the number of n X n circulant invertible matrices over GF(5)

Crossrefs

Cf. A003473 (p=2), A003474 (p=3).

Programs

PARI

/* see A003473, there set p=5 */