%I
%S 1,0,2,4,29,160,1070,7192,50688,365376,2695122
%N Coefficients in expansion of Ihara zeta function for infinite grid Z x Z.
%H Bryan Clair, <a href="http://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i2p16">The Ihara zeta function of the infinite grid</a>, Electron. J. Combin., 21(2) (2014), #P2.16.
%Y Cf. A241587, A241588.
%K nonn,more
%O 0,3
%A _N. J. A. Sloane_, May 12 2014
