A192037 - OEIS

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A192037

Generalized Euler phi function (for p=5).

2

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

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OFFSET

1,2

COMMENTS

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

LINKS

Table of n, a(n) for n=1..25.

PROG

(PARI) /* see A003473, there set p=5 */

CROSSREFS

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

Sequence in context: A128702 A322639 A277044 * A143060 A006637 A241937

Adjacent sequences: A192034 A192035 A192036 * A192038 A192039 A192040

KEYWORD

nonn

AUTHOR

Joerg Arndt, Jul 03 2011

STATUS

approved