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 A164552 #9 Sep 08 2022 08:45:47
%S A164552 1,10,90,780,6660,56520,478440,4045680,34194960,288969120,2441780640,
%T A164552 20632294080,174334109760,1473040494720,12446462643840,
%U A164552 105166336884480,888602163298560,7508235853048320,63440765337623040,536042108460026880
%N A164552 a(n) = 12*a(n-1)-30*a(n-2) for n > 1; a(0) = 1, a(1) = 10.
%C A164552 Binomial transform of A164551. Inverse binomial transform of A164553.
%H A164552 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (12, -30).
%F A164552 a(n) = ((3+2*sqrt(6))*(6+sqrt(6))^n+(3-2*sqrt(6))*(6-sqrt(6))^n)/6.
%F A164552 G.f.: (1-2*x)/(1-12*x+30*x^2).
%t A164552 LinearRecurrence[{12,-30},{1,10},20] (* _Harvey P. Dale_, Apr 19 2019 *)
%o A164552 (Magma) [ n le 2 select 9*n-8 else 12*Self(n-1)-30*Self(n-2): n in [1..20] ];
%Y A164552 Cf. A164551, A164553.
%K A164552 nonn
%O A164552 0,2
%A A164552 _Klaus Brockhaus_, Aug 15 2009