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 A091480 #5 Dec 18 2016 23:20:41 %S A091480 1,0,1,0,1,1,0,1,3,1,0,1,9,6,1,0,1,27,36,10,1,0,1,81,216,100,15,1,0,1, %T A091480 243,1296,1000,225,21,1,0,1,729,7776,10000,3375,441,28,1,0,1,2187, %U A091480 46656,100000,50625,9261,784,36,1,0,1,6561,279936,1000000,759375 %N A091480 Table of multigraphs (by antidiagonals) with n (>=1) nodes and k (>=0) edges. Each type of object labeled from its own label set. %D A091480 F. Bergeron, G. Labelle and P. Leroux, Combinatorial Species and Tree-Like Structures, Cambridge, 1998, p. 114 (2.4.44). %F A091480 a(n, k) = binomial(n, 2)^k. %e A091480 1 0 0 0 0 ... %e A091480 1 1 1 1 1 ... %e A091480 1 3 9 27 81 ... %e A091480 1 6 36 216 1296 ... %e A091480 1 10 100 1000 10000 ... %Y A091480 Columns 0-8: A000012, A000217(n-1), A000537(n-1), A059827(n-1), A059977(n-1), A059860(n-1), A059978(n-1), A059979(n-1), A059980(n-1). %Y A091480 Rows 1-10: A000007, A000012, A000244, A000400, A011557, A001024, A009965, A009972, A009980, A009989. %Y A091480 Cf. A091478. %K A091480 nonn,tabl %O A091480 1,9 %A A091480 _Christian G. Bower_, Jan 13 2004