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Second arithmetic derivative of squares of prime powers: a(n)=A068346(A056798(n)).
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%I #6 Jul 13 2013 12:04:11

%S 0,4,5,80,7,9,640,216,13,15,5120,19,21,25,800,3645,31,33,26624,39,43,

%T 45,49,1960,55,61,63,167936,69,73,75,81,67068,85,91,99,103,105,109,

%U 111,115,6776,34375,129,819200,133,139,141,151,153,159,165,169,10816

%N Second arithmetic derivative of squares of prime powers: a(n)=A068346(A056798(n)).

%C a(n) = A003415(A192083(n));

%H Reinhard Zumkeller, <a href="/A192084/b192084.txt">Table of n, a(n) for n = 1..10000</a>

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Jun 26 2011