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 A058177 #6 Mar 30 2012 17:37:12 %S A058177 1,0,1,0,1,0,1,1,0,1,1,5,1,0,0,3,5,1,1,0,1,148,213,96,34,0,0,0 %N A058177 Triangle: Number of commutative quasigroups of order n with k idempotents. %H A058177 <a href="/index/Qua#quasigroups">Index entries for sequences related to quasigroups</a> %e A058177 1; 0,1; 0,1,0; 1,1,0,1; 1,5,1,0,0; ... %Y A058177 Row sums give A057992. %K A058177 nonn,tabl,more %O A058177 0,12 %A A058177 _Christian G. Bower_, Nov 20 2000