id:A049605 - OEIS Search Results

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Smallest k>1 such that k divides sigma(k*n).

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6, 3, 2, 6, 2, 2, 2, 3, 6, 2, 2, 2, 2, 2, 2, 6, 2, 3, 2, 2, 2, 2, 2, 2, 6, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 6, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 6, 2, 2, 2, 2, 2 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) = 2, 3 or 6. For any m, a(A028983(m)) = 2. If a(m)=6 then m is a square but if m is a square a(m) is not necessary 6, first example is 7 : a(7^2)=3.`
	CROSSREFS	`Sequence in context: A083946 A010494 A078333 this_sequence A088395 A076214 A011488` `Adjacent sequences: A049602 A049603 A049604 this_sequence A049606 A049607 A049608`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jul 26 2002`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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