id:A060278 - OEIS Search Results

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Sum of composite divisors of n less than n.

+0
4

0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 10, 0, 0, 0, 12, 0, 15, 0, 14, 0, 0, 0, 30, 0, 0, 9, 18, 0, 31, 0, 28, 0, 0, 0, 49, 0, 0, 0, 42, 0, 41, 0, 26, 24, 0, 0, 70, 0, 35, 0, 30, 0, 60, 0, 54, 0, 0, 0, 97, 0, 0, 30, 60, 0, 61, 0, 38, 0, 59, 0, 117, 0, 0, 40, 42, 0, 71, 0, 98, 36, 0, 0, 127, 0, 0, 0 (list; graph; listen)

	OFFSET	`1,8`
	LINKS	`Matthew M. Conroy, Home page (listed instead of email address)`
	MAPLE	for n from 1 to 300 do s := 0: for j from 2 to n-1 do if isprime(j) then else if n mod j = 0 then s := s+j fi; fi: od: printf(`%d, `, s) od:
	CROSSREFS	`Cf. A000203, A035322, A035321, A023891.` `Sequence in context: A003194 A105570 A101419 this_sequence A046770 A046782 A074037` `Adjacent sequences: A060275 A060276 A060277 this_sequence A060279 A060280 A060281`
	KEYWORD	`nonn,easy`
	AUTHOR	`Jack Brennen (jb(AT)brennen.net), Mar 28 2001`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu) and Matthew M. Conroy, Mar 29 2001`

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.

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