id:A035322 - OEIS Search Results

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Sum of composite divisors of n that are less than n and are not primes nor prime powers.

+0
4

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 6, 0, 10, 0, 0, 0, 18, 0, 0, 0, 14, 0, 31, 0, 0, 0, 0, 0, 36, 0, 0, 0, 30, 0, 41, 0, 22, 15, 0, 0, 42, 0, 10, 0, 26, 0, 24, 0, 42, 0, 0, 0, 93, 0, 0, 21, 0, 0, 61, 0, 34, 0, 59, 0, 96, 0, 0, 15, 38, 0, 71, 0, 70, 0, 0, 0, 123, 0, 0, 0, 66, 0 (list; graph; listen)

	OFFSET	`1,12`
	MATHEMATICA	`Table[ Plus @@ Select[ Divisors[ n ], (Length[ FactorInteger[ # ] ]>1 && #<n )& ], {n, 1, 100} ]`
	CROSSREFS	`Cf. A000203, A035321, A023891, A060278.` `Adjacent sequences: A035319 A035320 A035321 this_sequence A035323 A035324 A035325` `Sequence in context: A102979 A102638 A005872 this_sequence A087936 A089804 A087255`
	KEYWORD	`nonn`
	AUTHOR	`njas`
	EXTENSIONS	`Description corrected by Jack Brennen (jb(AT)brennen.net), Mar 28 2001`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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