id:A054024 - OEIS Search Results

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Sum of divisors of n reduced modulo n.

+0
7

0, 1, 1, 3, 1, 0, 1, 7, 4, 8, 1, 4, 1, 10, 9, 15, 1, 3, 1, 2, 11, 14, 1, 12, 6, 16, 13, 0, 1, 12, 1, 31, 15, 20, 13, 19, 1, 22, 17, 10, 1, 12, 1, 40, 33, 26, 1, 28, 8, 43, 21, 46, 1, 12, 17, 8, 23, 32, 1, 48, 1, 34, 41, 63, 19, 12, 1, 58, 27, 4, 1, 51, 1, 40, 49, 64, 19, 12, 1, 26, 40 (list; graph; listen)

	OFFSET	`1,4`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	FORMULA	`a(n) = A000203(n) mod n`
	MAPLE	`with(numtheory): seq(sigma(i) mod i, i=1..100);`
	CROSSREFS	`Cf. A000203.` `Sequence in context: A085791 A106800 A055807 this_sequence A048993 A112413 A122960` `Adjacent sequences: A054021 A054022 A054023 this_sequence A054025 A054026 A054027`
	KEYWORD	`nonn`
	AUTHOR	`Asher Auel (asher.auel(AT)reed.edu) Jan 19, 2000`

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

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