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%I #5 Jan 11 2013 17:24:29
%S 1,1,4,1,24,3,192,16,1,1920,120,5,23040,1152,36,1,322560,13440,336,7,
%T 5160960,184320,3840,64,1,92897280,2903040,51840,720,9,1857945600,
%U 51609600,806400,9600,100,1,40874803200,1021870080,14192640,147840
%N Triangle of coefficients of x^2 in the Neumann polynomials.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/NeumannPolynomial.html">Neumann Polynomial.</a>
%K nonn,tabl
%O 0,3
%A _Eric W. Weisstein_