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A023155 Number of cycles of function f(x) = x^4 mod n. 1
1, 2, 2, 2, 2, 4, 4, 2, 4, 4, 4, 4, 4, 8, 4, 2, 2, 8, 6, 4, 8, 8, 4, 4, 4, 8, 6, 8, 4, 8, 10, 2, 8, 4, 8, 8, 6, 12, 8, 4, 4, 16, 10, 8, 8, 8, 4, 4, 10, 8, 4, 8, 4, 12, 8, 8, 12, 8, 4, 8, 10, 20, 16, 2, 8, 16, 10, 4, 8, 16, 10, 8, 6, 12, 8, 12, 16, 16, 10, 4, 8, 8, 6, 16, 4, 20, 8, 8, 4, 16, 16, 8, 20, 8, 12 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Not multiplicative; the smallest counterexample is a(275). - T. D. Noe, Nov 14 2006

LINKS

David W. Wilson, Table of n, a(n) for n=1..10000

CROSSREFS

Cf. A023153

Cf. A023153-A023161 (cycles of the functions f(x)=x^k mod n for k=2..10)

Sequence in context: A034877 A224516 A023161 * A277847 A085311 A052273

Adjacent sequences:  A023152 A023153 A023154 * A023156 A023157 A023158

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified April 20 22:22 EDT 2019. Contains 322310 sequences. (Running on oeis4.)