id:A095686 - OEIS Search Results

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Half the number of divisors of nonsquares (A000037).

+0
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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; listen)

	OFFSET	`1,4`
	COMMENT	`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 this_sequence A105258 A160696 A152545` `Adjacent sequences: A095683 A095684 A095685 this_sequence 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 November 25 20:09 EST 2009. Contains 167514 sequences.

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