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 A085352 #10 Jul 07 2020 06:52:57 %S A085352 1,7,47,307,1967,12427,77687,481747,2968607,18202267,111166727, %T A085352 676765987,4109424047,24900684907,150624812567,909852391027, %U A085352 5489631924287,33090379436347,199305216071207,1199645993692867 %N A085352 Expansion of (1-4x)/((1-5x)(1-6x)). %C A085352 Binomial transform of A085351. Binomial transform is A085353. %H A085352 Colin Barker, <a href="/A085352/b085352.txt">Table of n, a(n) for n = 0..1000</a> %H A085352 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (11,-30). %F A085352 a(n) = 2*6^n - 5^n. %F A085352 a(n) = 11*a(n-1) - 30*a(n-2) for n>1. - _Colin Barker_, Jul 07 2020 %o A085352 (PARI) Vec((1 - 4*x) / ((1 - 5*x)*(1 - 6*x)) + O(x^20)) \\ _Colin Barker_, Jul 07 2020 %Y A085352 Cf. A085351, A085353. %K A085352 easy,nonn %O A085352 0,2 %A A085352 _Paul Barry_, Jun 24 2003