login
Greatest common divisor of indecomposable Wallis pairs.
3

%I #8 Sep 18 2013 18:38:39

%S 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,

%T 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,

%U 1,4,2,2,1,1,4,1,1,2,1,1,1,1,2,2,1,6,4

%N Greatest common divisor of indecomposable Wallis pairs.

%C Terms > 1 show that (x,y) need not be a Wallis pair if (cx,cy) is a Wallis pair.

%H Donovan Johnson, <a href="/A077053/b077053.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) = gcd(A075768(n), A075769(n)).

%Y Cf. A072182, A072186, A075768, A075769.

%K nonn

%O 1,5

%A _Klaus Brockhaus_, Oct 22 2002

%E Offset corrected by _Donovan Johnson_, Sep 18 2013