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 A163147 #7 Sep 08 2022 08:45:46 %S A163147 1,12,124,1208,11456,107232,997184,9242368,85517056,790574592, %T A163147 7305293824,67488831488,623410712576,5758241390592,53185308114944, %U A163147 491231692423168,4537090136866816,41905067449516032,387038978271084544 %N A163147 a(n) = 14*a(n-1) - 44*a(n-2) for n > 1; a(0) = 1, a(1) = 12. %C A163147 Binomial transform of A163146. Inverse binomial transform of A163148. %H A163147 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (14,-44). %F A163147 a(n) = ((1+sqrt(5))*(7+sqrt(5))^n+(1-sqrt(5))*(7-sqrt(5))^n)/2. %F A163147 G.f.: (1-2*x)/(1-14*x+44*x^2). %o A163147 (Magma) [ n le 2 select 11*n-10 else 14*Self(n-1)-44*Self(n-2): n in [1..19] ]; %o A163147 (PARI) Vec((1-2*x)/(1-14*x+44*x^2) + O(x^30)) \\ _Jinyuan Wang_, Mar 23 2020 %Y A163147 Cf. A163146, A163148. %K A163147 nonn %O A163147 0,2 %A A163147 _Klaus Brockhaus_, Jul 21 2009