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%I #9 Mar 01 2014 14:15:34
%S 0,0,0,0,0,4,0,0,0,12,8,0,0,0,0,12,0,64,24,0,16,28,0,16,0,0,0,36,0,4,
%T 24,0,0,60,128,56,48,0,0,60,32,0,56,32,0,144,32,0,0,28,0,192,0,4,72,0,
%U 0,60,8,0,48,0,0,84,0,376,120,0,256,52,112,112,96,0,0,276,0,100,120,96,64,88,0,148,112,644,64
%N How much n increases when it is remultiplied from GF(2)[X] to Z: a(n) = A234742(n) - n.
%C All terms are divisible by 4.
%H Antti Karttunen, <a href="/A236379/b236379.txt">Table of n, a(n) for n = 0..8191</a>
%F a(n) = A234742(n) - n.
%F For all n, a(A091209(n)) > 0, and also a(A236844(n)) > 0 and a(A236835(n)) > 0.
%o (Scheme) (define (A236379 n) (- (A234742 n) n))
%Y A235035 gives the positions of zeros.
%Y Cf. also A234742, A236378, A236380, A091209, A236835, A236844.
%K nonn
%O 0,6
%A _Antti Karttunen_, Jan 24 2014
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