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%I #6 Feb 24 2020 17:16:24
%S 0,0,1,0,1,0,2,1,1,0,3,0,1,1,4,0,3,0,4,1,1,0,6,1,1,2,4,0,4,0,6,1,1,1,
%T 9,0,1,1,7,0,5,0,5,3,1,0,11,1,3,1,6,0,6,1,8,1,1,0,12,0,1,3,11,1,5,0,8,
%U 1,4,0,17,0,1,3,8,1,6,0,15,4,1,0,17,1,1,1,13,0,11,1,10,1,1,1,21,0,3,4,16
%N First differences of A064574.
%C Apparently a(n)=0 when n+1 is prime. Diverges from A028422(n+1) at n=19.
%H Antti Karttunen, <a href="/A064577/b064577.txt">Table of n, a(n) for n = 1..16383</a>
%F a(n) = A064574(n+1) - A064574(n). - _Antti Karttunen_, Feb 24 2020
%Y Cf. A064572, A064573, A064574, A064575, A064576, A028422.
%K easy,nonn,look
%O 1,7
%A _Marc LeBrun_, Sep 20 2001