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 A115084 #3 Mar 30 2012 18:36:55 %S A115084 1,2,6,20,82,397,2186,13241,86578,603249,4440800,34313272,276904847, %T A115084 2324369733,20227700385,181987602305,1688734327673,16129293322211, %U A115084 158281104406067,1593383284029479,16431757177327175,173372313294822983 %N A115084 Row sums of triangle A115080. %Y A115084 Cf. A115080, A115081 (column 0), A115082 (column 1), A115083 (column 2); A115089. %K A115084 nonn %O A115084 0,2 %A A115084 _Paul D. Hanna_, Jan 13 2006