id:A082051 - OEIS Search Results

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A082051

Sum of divisors of n that are not of the form 3k+2.

+0
2

1, 1, 4, 5, 1, 10, 8, 5, 13, 11, 1, 26, 14, 8, 19, 21, 1, 37, 20, 15, 32, 23, 1, 50, 26, 14, 40, 40, 1, 65, 32, 21, 37, 35, 8, 89, 38, 20, 56, 55, 1, 80, 44, 27, 73, 47, 1, 114, 57, 36, 55, 70, 1, 118, 56, 40, 80, 59, 1, 141, 62, 32, 104, 85, 14, 131, 68, 39, 73, 88, 1, 185 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`a(A003627(n))=1.`
	PROGRAM	`(PARI) for(n=1, 100, print1(sumdiv(n, d, if(d%3!=2, d))", "))`
	CROSSREFS	`Cf. A000203, A046913, A078181, A078182, A082050, A027748.` `Adjacent sequences: A082048 A082049 A082050 this_sequence A082052 A082053 A082054` `Sequence in context: A094642 A069284 A068447 this_sequence A108446 A109962 A102230`
	KEYWORD	`nonn,easy`
	AUTHOR	`Ralf Stephan (ralf(AT)ark.in-berlin.de), Apr 02 2003`

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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