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 A163461 #10 Sep 08 2022 08:45:46 %S A163461 1,10,101,1028,10525,108238,1116809,11551760,119703769,1242078802, %T A163461 12900820685,134090546972,1394465011381,14507216994070, %U A163461 150967169994161,1571338917363368,16357694083001905,170302719022328218 %N A163461 a(n) = 18*a(n-1) - 79*a(n-2) for n > 1; a(0) = 1, a(1) = 10. %C A163461 Binomial transform of A163460. Inverse binomial transform of A163462. %H A163461 G. C. Greubel, <a href="/A163461/b163461.txt">Table of n, a(n) for n = 0..975</a> %H A163461 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (18, -79). %F A163461 a(n) = ((2+sqrt(2))*(9+sqrt(2))^n + (2-sqrt(2))*(9-sqrt(2))^n)/4. %F A163461 G.f.: (1-8*x)/(1-18*x+79*x^2). %F A163461 E.g.f.: (1/2)*exp(9*x)*(2*cosh(sqrt(2)*x) + sqrt(2)*sinh(sqrt(2)*x)). - _G. C. Greubel_, Dec 24 2016 %t A163461 LinearRecurrence[{18,-79},{1,10},30] (* _Harvey P. Dale_, Jul 25 2013 *) %o A163461 (Magma) [ n le 2 select 9*n-8 else 18*Self(n-1)-79*Self(n-2): n in [1..18] ]; %o A163461 (PARI) Vec((1-8*x)/(1-18*x+79*x^2) + O(x^50)) \\ _G. C. Greubel_, Dec 24 2016 %Y A163461 Cf. A163460, A163462. %K A163461 nonn %O A163461 0,2 %A A163461 _Klaus Brockhaus_, Jul 28 2009