A219093 - OEIS

%I #11 Mar 24 2015 10:04:57

%S 1,1,1,1,2,1,1,1,1,1,3,1,1,3,1,1,2,1,4,3,1,1,3,1,1,1,4,1,5,1,1,1,1,5,

%T 3,1,1,1,4,1,6,1,1,3,1,1,3,1,1,1,1,1,2,5,7,1,1,1,5,1,1,7,1,5,2,1,1,1,

%U 5,1,8,1,1,3,1,7,2,1,4,1,1,1,6,5,1,1,8

%N Denominator of the least reduced fraction b/c > 1 using divisors b and c of n.

%C The product b*c divides n.

%H Clark Kimberling, <a href="/A219093/b219093.txt">Table of n, a(n) for n = 2..10000</a>

%e For n = 2,...,12, the fractions are 2/1, 3/1, 2/1, 5/1, 3/2, 7/1, 2/1, 3/1, 2/1, 11/1, 4/3, so that

%e A218993 = (2, 3, 2, 5, 3, 7, 2, 3, 2, 11, 4, ... );

%e A219093 = (1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 3, ... );

%e A219094 = (1, 1, 2, 1, 1, 1, 4, 3, 5, 1, 1, ... );

%e A219095 = (6, 12, 15, 18, 20, 21, 24, 28, 30, 35, 36, ... ).

%t (See A218993.)

%Y Cf. A218993, A219094, A219095.

%K nonn,easy

%O 2,5

%A _Clark Kimberling_, Feb 06 2013