A054014 - OEIS

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A054014

Chowla function of n read modulo (the number of divisors of n).

0, 0, 0, 2, 0, 1, 0, 2, 0, 3, 0, 3, 0, 1, 0, 4, 0, 2, 0, 3, 2, 1, 0, 3, 2, 3, 0, 3, 0, 1, 0, 0, 2, 3, 0, 0, 0, 1, 0, 1, 0, 5, 0, 3, 2, 1, 0, 5, 1, 0, 0, 3, 0, 1, 0, 7, 2, 3, 0, 11, 0, 1, 4, 6, 2, 5, 0, 3, 2, 1, 0, 2, 0, 3, 0, 3, 2, 1, 0, 5, 4, 3, 0, 7, 2, 1, 0, 3, 0, 11, 0, 3, 2, 1, 0, 11, 0, 0, 2, 8, 0, 1, 0 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	COMMENTS	`Chowla's function (A048050) = sum of divisors of n except 1 and n.`
	FORMULA	`a(n) = A048050(n) mod A000005.`
	MAPLE	`with(numtheory): [seq((sigma(i)-i-1) mod tau(i), i=1..120)];`
	CROSSREFS	`Cf. A000005, A048050, A054013, A054015.` `Sequence in context: A053473 A144764 A084929 * A158945 A156667 A178090` `Adjacent sequences: A054011 A054012 A054013 * A054015 A054016 A054017`
	KEYWORD	`nonn`
	AUTHOR	`Asher Auel (asher.auel(AT)reed.edu) Jan 17, 2000`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.