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 A138352 #2 Mar 31 2012 10:31:22 %S A138352 1,1,0,1,1,0,1,2,1,0,1,2,5,1,0,1,2,8,8,1,0,1,2,9,20,14,1,0,1,2,9,29 %N A138352 Table read by antidiagonals: T(n,k) is the number of transitive directed multigraphs with loops with n arcs and k vertices. %C A138352 Partial sums of the rows of A139623, i.e., T(n,k) = sum(T139623(n,p),p=0..k). %C A138352 If k>=2n, T(n,k) = A139628(n). %Y A138352 Cf. A138107. %K A138352 nonn,tabl %O A138352 0,8 %A A138352 _Benoit Jubin_, May 07 2008