A291805 a(n) = phi(A291789(n)).

72, 120, 200, 352, 792, 280, 480, 464, 1008, 1240, 1152, 1088, 2496, 2304, 2688, 3360, 4560, 7920, 8960, 22080, 19520, 47040, 28640, 61440, 82400, 137760, 126336, 207360, 319488, 552960, 1013760, 2716416, 4505024, 7193472

Offset: 1

Author

N. J. A. Sloane, Sep 07 2017

Keywords

• nonn

Comments

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

Links

• Sean A. Irvine, Table of n, a(n) for n = 1..504

Crossrefs

Cf. A291789, A291804.