A192016 Second arithmetic derivative of prime powers: a(n) = A068346(A000961(n)).

0, 0, 0, 4, 0, 0, 16, 5, 0, 0, 80, 0, 0, 0, 7, 27, 0, 0, 176, 0, 0, 0, 0, 9, 0, 0, 0, 640, 0, 0, 0, 0, 216, 0, 0, 0, 0, 0, 0, 0, 0, 13, 55, 0, 1408, 0, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 621, 0, 5120, 0, 0, 0, 0, 0, 0, 0, 19

Offset

1,4

Comments

a(n) = A003415(A192015(n));

a(A000040(n)) = 0; a(A002808(n)) > 0.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Prog

(Haskell)
a192016 = a068346 . a000961  -- Reinhard Zumkeller, Apr 16 2014

Crossrefs

Sequence in context: A069026 A133851 A062685 * A028699 A019259 A019218

Adjacent sequences: A192013 A192014 A192015 * A192017 A192018 A192019

Keyword

nonn

Author

Reinhard Zumkeller, Jun 26 2011

Status

approved