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A192016 Second arithmetic derivative of prime powers: a(n) = A068346(A000961(n)). 3
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified February 21 19:50 EST 2018. Contains 299423 sequences. (Running on oeis4.)