id:A068101 - OEIS Search Results

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Sum{k|n k<=sqrt(n)} mu(k) where mu(k) is the Moebius function and the sum is over the positive divisors k of n with k <= sqrt(n).

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1, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, -1, 1, 0, 0, 0, 1, -1, 1, 0, 0, 0, 1, -1, 0, 0, 0, 0, 1, -2, 1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 1, 0, 1, 0, -1, 0, 1, 0, 0, -1, 0, 0, 1, 0, 0, -1, 0, 0, 1, -1, 1, 0, -1, 0, 0, 0, 1, 0, 0, -2, 1, 0, 1, 0, -1, 0, 0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 1, -1, 0, 0, 1, 0, 1 (list; graph; listen)

	OFFSET	`1,30`
	CROSSREFS	`Cf. A086956.` `Adjacent sequences: A068098 A068099 A068100 this_sequence A068102 A068103 A068104` `Sequence in context: A074079 A037858 A037876 this_sequence A094263 A049761 A030618`
	KEYWORD	`sign`
	AUTHOR	`Leroy Quet (qq-quet(AT)mindspring.com), Mar 22 2002`

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Last modified October 5 16:50 EDT 2008. Contains 144613 sequences.

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