A077053 - OEIS

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A077053

Greatest common divisor of indecomposable Wallis pairs.

1, 1, 1, 1, 2, 1, 2, 2, 1, 4, 1, 1, 1, 1, 2, 1, 1, 2, 1, 4, 1, 1, 3, 1, 4, 1, 1, 1, 1, 1, 1, 8, 1, 4, 5, 1, 8, 4, 1, 1, 1, 1, 1, 8, 2, 1, 1, 1, 6, 1, 8, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 1, 2, 1, 4, 2, 2, 1, 1, 4, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 6, 4 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,5`
	COMMENTS	`Terms > 1 show that (x,y) need not be a Wallis pair if (cx,cy) is a Wallis pair.`
	LINKS	`Donovan Johnson, Table of n, a(n) for n = 1..1000`
	FORMULA	`a(n) = gcd(A075768(n), A075769(n)).`
	CROSSREFS	`Cf. A072182, A072186, A075768, A075769.` `Sequence in context: A035388 A255716 A177954 * A105272 A060438 A106190` `Adjacent sequences: A077050 A077051 A077052 * A077054 A077055 A077056`
	KEYWORD	`nonn`
	AUTHOR	`Klaus Brockhaus, Oct 22 2002`
	EXTENSIONS	`Offset corrected by Donovan Johnson, Sep 18 2013`
	STATUS	`approved`

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Last modified September 12 09:33 EDT 2015. Contains 261559 sequences.