%I
%S 1,1,2,8,26,70,820,5152,20316,388712,3666188,17298908,501805832,
%T 6256792412,33844737292,1353617016078,20960708128068,137741948419428,
%U 6588092586831028,121860622573650906,924837580461274556
%N Unsigned row sums of triangle A136590.
%C A136590 is the triangle of trinomial logarithmic coefficients.
%o (PARI) a(n)=sum(k=0,n,n!/k!*abs(polcoeff(log(1+x+x^2 +x*O(x^n))^k,n)))
%Y Cf. A136590, A136591, A136592, A136593.
%K nonn
%O 0,3
%A _Paul D. Hanna_, Jan 10 2008
