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 A088166 #12 Jun 22 2019 23:13:15 %S A088166 12,72,504,3410,23184,159094,1089648,7465176,51170460,350713222, %T A088166 2403763488,16475700746,112925875764,774004377960,5305106018016, %U A088166 36361732975514,249227005939632,1708227330997438,11708364225400920 %N A088166 Smallest integer divisible by Fibonacci(2n) such that the second partial quotient in the continued fraction expansion of a(n)/phi is 2 (phi is the golden ratio), n >= 2. %C A088166 Smallest integer divisible by Fibonacci(2n) such that the continued fraction expansion of a(n)/phi has period 2 or 4. %F A088166 a(n) = Fibonacci(2n)*ceiling(Lucas(2n)/2). %F A088166 Fibonacci(2n)*(A071618(n)+1). - _Thomas Baruchel_, Nov 26 2003 %F A088166 Empirical g.f.: -2*x^2*(x^7 - 7*x^6 - 17*x^4 + 131*x^3 - 6*x^2 + 6*x - 6) / ((x^2 - 7*x + 1)*(x^2 - 3*x + 1)*(x^4 + 3*x^3 + 8*x^2 + 3*x + 1)). - _Colin Barker_, Jan 11 2014 %Y A088166 Cf. A087954. %K A088166 easy,nonn %O A088166 2,1 %A A088166 _Thomas Baruchel_, Sep 21 2003