id:A070963 - OEIS Search Results

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a(1) = 2; for n >= 2, n = sum{1<=k<n, GCD(k,n)=1} a(k).

+0
1

2, 1, 2, 0, 4, -2, 0, 2, 6, -4, 6, -4, -6, 10, 2, -2, 12, -10, -2, 8, 2, -4, 8, 4, -16, 8, 10, -8, 10, -8, -8, 14, 14, -26, 26, -14, -36, 42, 20, -22, 68, -66, -60, 14, -10, 60, 40, -74, -38, -66, 10, 134, 44, -98, -64, -54, 22, 156, 20, -18, -34, -240, 10, 256, 32, -18, -6, -144, -72, 226, 70, -68, -50, -184, 58, 236, 82 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`12 = a(1) + a(5) + a(7) + a(11) = 2 + 4 + 0 + 6 because 1, 5, 7 and 11 are the positive integers < 12 and relatively prime to 12.`
	CROSSREFS	`Sequence in context: A132456 A080966 A023895 this_sequence A139158 A055135 A121310` `Adjacent sequences: A070960 A070961 A070962 this_sequence A070964 A070965 A070966`
	KEYWORD	`sign`
	AUTHOR	`Leroy Quet, May 16 2002`

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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.

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