login
The numerator of the fraction |n^2/A049417(n)-A064380(n)|.
5

%I #8 Mar 30 2012 18:52:59

%S 1,1,1,1,0,1,4,1,5,1,1,1,1,3,1,1,1,1,1,7,5,1,2,1,2,9,3,1,1,1,4,11,11,

%T 25,2,1,1,9,2,1,11,1,4,3,7,1,2,1,2,1,13,1,3,1,13,49,17,1,0,1,1,49,16,

%U 25,1,1,17,19,35,1,14,1,2

%N The numerator of the fraction |n^2/A049417(n)-A064380(n)|.

%C n^2/A049417(n) is a multiplicative function, whereas A064380 is not. This sequence here measures the (small) differences n^2/A049417(n)-A064380(n) = 1/3, 1/4, 1/5, 1/6, 0, 1/8, 4/15, 1/10, 5/9, 1/12, 1/5 ...

%Y Cf. A064380, A049417, A185383 (denominators)

%K nonn,frac,less

%O 2,7

%A _Vladimir Shevelev_, Feb 17 2011