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 A163165 #12 Aug 23 2024 22:06:45 %S A163165 1,10,104,1120,12416,140800,1624064,18964480,223379456,2646999040, %T A163165 31495553024,375799152640,4492409962496,53771480596480, %U A163165 644158255529984,7721102973337600,92582866935873536,1110431453277061120,13320673839697362944,159812057279349391360 %N A163165 a(n) = 20*a(n-1) - 96*a(n-2) for n > 1; a(0) = 1, a(1) = 10. %C A163165 Binomial transform of A152106. Tenth binomial transform of powers of 4 interleaved with zeros. %H A163165 Vincenzo Librandi, <a href="/A163165/b163165.txt">Table of n, a(n) for n = 0..200</a> %H A163165 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (20,-96). %F A163165 a(n) = (12^n + 8^n)/2. %F A163165 G.f.: (1-10*x)/((1-8*x)*(1-12*x)). %F A163165 E.g.f.: exp(10*x)*cosh(2*x). - _Elmo R. Oliveira_, Aug 23 2024 %o A163165 (Magma) [ n le 2 select 9*n-8 else 20*Self(n-1)-96*Self(n-2): n in [1..18] ]; %o A163165 (PARI) a(n) = (12^n+8^n)/2; \\ _Jinyuan Wang_, Mar 23 2020 %Y A163165 Cf. A000302 (powers of 4), A152106. %K A163165 nonn,easy %O A163165 0,2 %A A163165 _Klaus Brockhaus_, Jul 22 2009