%I #7 Mar 31 2012 14:02:20
%S 0,1,2,0,0,0,3,0,0,0,4,0,5,0,0,0,0,0,6,0,0,0,0,0,7,0,0,0,0,0,8,0,0,0,
%T 0,0,9,0,0,0,10,0,0,0,0,0,11,0,0,0,0,0,0,0,12,0,0,0,13,0,14,0,0,0,0,0,
%U 15,0,0,0,0,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,17,0,0,0,18,0,0,0,0,0,19,0
%N Inverse function of A014580: position in A014580 if the n-th GF(2)[X] polynomial is irreducible, 0 otherwise.
%H A. Karttunen, <a href="/A091247/a091247.scm.txt">Scheme-program for computing this sequence.</a>
%H <a href="/index/Ge#GF2X">Index entries for sequences operating on GF(2)[X]-polynomials</a>
%F a(n) = A091225(n) * A091226(n).
%Y Inverse of A014580. a(n) = A049084(A091203(n)).
%K nonn
%O 1,3
%A _Antti Karttunen_, Jan 03 2004