id:A055935 - OEIS Search Results

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a(0)=1; a(n) = Sum { a(j) : j<n, GCD(n,a(j)) = 1 }.

+0
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1, 1, 2, 4, 2, 10, 2, 22, 2, 46, 2, 72, 2, 168, 2, 88, 2, 428, 2, 858, 2, 620, 2, 2294, 2, 4006, 2, 7546, 2, 16192, 2, 29472, 2, 7442, 2, 60960, 2, 127972, 2, 38738, 2, 296980, 2, 593962, 2, 798786, 2, 1986714, 2, 3926978, 2, 5023380, 2, 12923792, 2, 16513952 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`For j > 0, a(2j) = 2 and a(j+1) is even.`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`a(9) = 46 because all previous terms are relatively prime to 9 and the sum of all previous terms is 46.`
	CROSSREFS	`Sequence in context: A058942 A072866 A061393 this_sequence A086930 A099585 A097577` `Adjacent sequences: A055932 A055933 A055934 this_sequence A055936 A055937 A055938`
	KEYWORD	`easy,nonn`
	AUTHOR	`Leroy Quet Jul 17 2000`

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

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