id:A000190 - OEIS Search Results

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Number of solutions to x^4 == 0 (mod n).

+0
12

1, 1, 1, 2, 1, 1, 1, 4, 3, 1, 1, 2, 1, 1, 1, 8, 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, 8, 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, 8, 27, 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`
	FORMULA	`Multiplicative with a(p^e) = p^[3e/4]. - David W. Wilson (davidwwilson(AT)comcast.net), Aug 01, 2001.`
	MATHEMATICA	`Array[ Function[ n, Count[ Array[ PowerMod[ #, 4, n ]&, n, 0 ], 0 ] ], 100 ]`
	CROSSREFS	`Sequence in context: A125653 A104445 A000189 this_sequence A003557 A073752 A128708` `Adjacent sequences: A000187 A000188 A000189 this_sequence A000191 A000192 A000193`
	KEYWORD	`nonn,mult`
	AUTHOR	`njas`

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

AT&T Labs Research