A291805 - OEIS

%I #14 Sep 07 2017 21:26:04

%S 72,120,200,352,792,280,480,464,1008,1240,1152,1088,2496,2304,2688,

%T 3360,4560,7920,8960,22080,19520,47040,28640,61440,82400,137760,

%U 126336,207360,319488,552960,1013760,2716416,4505024,7193472

%N a(n) = phi(A291789(n)).

%C Created in the hope that it will help explain the long-term behavior of A291789, which is the mean of this and A291804.

%H Sean A. Irvine, <a href="/A291805/b291805.txt">Table of n, a(n) for n = 1..504</a>

%Y Cf. A291789, A291804.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Sep 07 2017