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A000189 Number of solutions to x^3 == 0 (mod n). +0
10
1, 1, 1, 2, 1, 1, 1, 4, 3, 1, 1, 2, 1, 1, 1, 4, 1, 3, 1, 2, 1, 1, 1, 4, 5, 1, 9, 2, 1, 1, 1, 8, 1, 1, 1, 6, 1, 1, 1, 4, 1, 1, 1, 2, 3, 1, 1, 4, 7, 5, 1, 2, 1, 9, 1, 4, 1, 1, 1, 2, 1, 1, 3, 16, 1, 1, 1, 2, 1, 1, 1, 12, 1, 1, 5, 2, 1, 1, 1, 4, 9, 1, 1, 2, 1, 1, 1, 4, 1, 3 (list; graph; listen)
OFFSET

1,4

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

H. Bottomley, Some Smarandache-type multiplicative sequences

S. R. Finch and Pascal Sebah, Squares and Cubes Modulo n (arXiv:math.NT/0604465).

FORMULA

Multiplicative with a(p^e) = p^[2e/3]. - David W. Wilson (davidwwilson(AT)comcast.net), Aug 01, 2001.

MATHEMATICA

Array[ Function[ n, Count[ Array[ PowerMod[ #, 3, n ]&, n, 0 ], 0 ] ], 100 ]

CROSSREFS

Cf. A019555.

Sequence in context: A140130 A125653 A104445 this_sequence A000190 A003557 A073752

Adjacent sequences: A000186 A000187 A000188 this_sequence A000190 A000191 A000192

KEYWORD

nonn,mult

AUTHOR

njas

page 1

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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