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 A163148 #7 Sep 08 2022 08:45:46 %S A163148 1,13,149,1617,17081,177893,1838509,18920457,194255281,1991777533, %T A163148 20407378949,209003188737,2140015661801,21909062453333, %U A163148 224284075207069,2295910518566457,23501807859846241,240570205162118893 %N A163148 a(n) = 16*a(n-1) - 59*a(n-2) for n > 1; a(0) = 1, a(1) = 13. %C A163148 Binomial transform of A163147. %H A163148 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (16,-59). %F A163148 a(n) = ((1+sqrt(5))*(8+sqrt(5))^n+(1-sqrt(5))*(8-sqrt(5))^n)/2. %F A163148 G.f.: (1-3*x)/(1-16*x+59*x^2). %o A163148 (Magma) [ n le 2 select 12*n-11 else 16*Self(n-1)-59*Self(n-2): n in [1..18] ]; %o A163148 (PARI) Vec((1-3*x)/(1-16*x+59*x^2) + O(x^30)) \\ _Jinyuan Wang_, Mar 23 2020 %Y A163148 Cf. A163147. %K A163148 nonn %O A163148 0,2 %A A163148 _Klaus Brockhaus_, Jul 21 2009