id:A036997 - OEIS Search Results

Search: id:A036997

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Number of composite numbers relatively prime to n.

+0
4

0, 0, 0, 0, 1, 0, 2, 0, 2, 1, 5, 0, 6, 1, 3, 2, 9, 0, 10, 1, 5, 3, 13, 0, 11, 4, 9, 4, 18, 0, 19, 5, 10, 6, 14, 2, 24, 7, 13, 5, 27, 1, 28, 7, 11, 9, 31, 2, 27, 6, 18, 10, 36, 3, 25, 9, 21, 13, 41, 1, 42, 13, 19, 14, 31, 4, 47, 14, 26, 7, 50, 5, 51, 16, 20, 16, 40, 5, 56, 11, 32, 19 (list; graph; listen)

	OFFSET	`0,7`
	MATHEMATICA	`Table[ Count[ Select[ Range[ n ], GCD[ #, n ]===1& ], q_/; !(PrimeQ[ q ]\|\|q===1) ], {n, 180} ]`
	CROSSREFS	`A048597 gives the terms with A036997(n) = 0` `Sequence in context: A058707 A081082 A049785 this_sequence A116900 A160210 A028928` `Adjacent sequences: A036994 A036995 A036996 this_sequence A036998 A036999 A037000`
	KEYWORD	`nonn`
	AUTHOR	`Wouter Meeussen (wouter.meeussen(AT)pandora.be)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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