id:A082052 - OEIS Search Results

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A082052

Sum of divisors of n that are not of the form 4k+1.

+0
2

0, 2, 3, 6, 0, 11, 7, 14, 3, 12, 11, 27, 0, 23, 18, 30, 0, 29, 19, 36, 10, 35, 23, 59, 0, 28, 30, 55, 0, 66, 31, 62, 14, 36, 42, 81, 0, 59, 42, 84, 0, 74, 43, 83, 18, 71, 47, 123, 7, 62, 54, 84, 0, 110, 66, 119, 22, 60, 59, 162, 0, 95, 73, 126, 0, 110, 67, 108, 26, 138, 71 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(A004613(n))=0.`
	PROGRAM	`(PARI) for(n=1, 100, print1(sumdiv(n, d, if(d%4!=1, d))", "))`
	CROSSREFS	`Cf. A082053, A050449, A050452, A000203, A050460, A078181, A078182.` `Sequence in context: A134972 A078890 A021813 this_sequence A107409 A133031 A124795` `Adjacent sequences: A082049 A082050 A082051 this_sequence A082053 A082054 A082055`
	KEYWORD	`nonn,easy`
	AUTHOR	`Ralf Stephan (ralf(AT)ark.in-berlin.de), Apr 02 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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