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 A115325 #6 May 11 2014 22:40:08 %S A115325 1,1,3,7,17,43,114,308,837,2294,6330,17603,49255,138359,390374, %T A115325 1105655,3142141,8956264,25592485,73305487,210435337,605304274, %U A115325 1744271476,5034584633,14553714389,42129545594,122112130949,354362929036 %N A115325 Rightmost diagonal of triangle A115323. %C A115325 Limit a(n+1)/a(n) = 3. %K A115325 nonn %O A115325 0,3 %A A115325 _Paul D. Hanna_, Jan 20 2006