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 A085277 #7 Jun 13 2015 00:51:05
%S A085277 1,7,30,108,360,1152,3600,11088,33840,102672,310320,935568,2815920,
%T A085277 8466192,25435440,76380048,229287600,688157712,2065062960,6196368528,
%U A085277 18591464880,55779113232,167346776880,502059205008,1506215363760
%N A085277 Expansion of (1+x)^2/((1-2x)(1-3x)).
%C A085277 Inverse binomial transform of A016208. Binomial transform of A085278.
%H A085277 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (5,-6).
%F A085277 a(n)=16*3^n/3+0^n/6-9*2^n/2.
%F A085277 a(0)=1, a(1)=7, a(2)=30, a(n)=5*a(n-1)-6*a(n-2). - _Harvey P. Dale_, Sep 30 2012
%t A085277 CoefficientList[Series[(1+x)^2/((1-2x)(1-3x)),{x,0,30}],x] (* or *) Join[{1},LinearRecurrence[{5,-6},{7,30},30]] (* _Harvey P. Dale_, Sep 30 2012 *)
%K A085277 easy,nonn
%O A085277 0,2
%A A085277 _Paul Barry_, Jun 25 2003