A095686 - OEIS

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A095686

Half the number of divisors of nonsquares (A000037).

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

	OFFSET	`1,4`
	COMMENTS	`The first occurrence of n in the sequence corresponds to the nonsquare = A003680(n) = A005179(2n).` `Also number of unordered divisor pairs (d,n/d) for n=A000037. - Lekraj Beedassy (blekraj(AT)yahoo.com), Jul 30 2004`
	FORMULA	`a(n)=A000005(A000037(n))/2.`
	CROSSREFS	`Sequence in context: A107027 A107030 A050362 * A105258 A205451 A160696` `Adjacent sequences: A095683 A095684 A095685 * A095687 A095688 A095689`
	KEYWORD	`nonn`
	AUTHOR	`Lekraj Beedassy (blekraj(AT)yahoo.com), Jul 05 2004`
	EXTENSIONS	`Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 09 2004`

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Last modified February 14 18:33 EST 2012. Contains 205663 sequences.