This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A136594 #2 Mar 30 2012 18:37:09 %S A136594 1,1,2,8,26,70,820,5152,20316,388712,3666188,17298908,501805832, %T A136594 6256792412,33844737292,1353617016078,20960708128068,137741948419428, %U A136594 6588092586831028,121860622573650906,924837580461274556 %N A136594 Unsigned row sums of triangle A136590. %C A136594 A136590 is the triangle of trinomial logarithmic coefficients. %o A136594 (PARI) a(n)=sum(k=0,n,n!/k!*abs(polcoeff(log(1+x+x^2 +x*O(x^n))^k,n))) %Y A136594 Cf. A136590, A136591, A136592, A136593. %K A136594 nonn %O A136594 0,3 %A A136594 _Paul D. Hanna_, Jan 10 2008