id:A063919 - OEIS Search Results

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Sum of proper unitary divisors (or unitary aliquot parts) of n (including 1).

+0
23

1, 1, 1, 1, 1, 6, 1, 1, 1, 8, 1, 8, 1, 10, 9, 1, 1, 12, 1, 10, 11, 14, 1, 12, 1, 16, 1, 12, 1, 42, 1, 1, 15, 20, 13, 14, 1, 22, 17, 14, 1, 54, 1, 16, 15, 26, 1, 20, 1, 28, 21, 18, 1, 30, 17, 16, 23, 32, 1, 60, 1, 34, 17, 1, 19, 78, 1, 22, 27, 74, 1, 18, 1, 40, 29, 24, 19, 90, 1, 22, 1, 44 (list; graph; listen)

	OFFSET	`1,6`
	COMMENT	`For definition of unitary divisor see A034448.`
	EXAMPLE	`a(10)=8 because the unitary divisors of 10 are 1, 2, 5 and 10, with sum 18, and 18-10 = 8.`
	CROSSREFS	`The values of sequence are A034448(n)-n (for n > 1).` `Cf. A001065, A034448.` `Sequence in context: A126795 A064793 A034460 this_sequence A072815 A080304 A050449` `Adjacent sequences: A063916 A063917 A063918 this_sequence A063920 A063921 A063922`
	KEYWORD	`easy,nonn,nice`
	AUTHOR	`Felice Russo (felice.russo(AT)katamail.com), Aug 31 2001`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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