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 A134490 #31 Dec 31 2023 10:19:42
%S A134490 2,21,233,2584,28657,317811,3524578,39088169,433494437,4807526976,
%T A134490 53316291173,591286729879,6557470319842,72723460248141,
%U A134490 806515533049393,8944394323791464,99194853094755497,1100087778366101931
%N A134490 a(n) = Fibonacci(5n + 3).
%H A134490 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (11,1)
%F A134490 a(n) = 11a(n-1) + a(n-2). - _Paul Curtz_, May 07 2008
%F A134490 From _R. J. Mathar_, Nov 02 2008: (Start)
%F A134490 G.f.: (2-x)/(1 - 11x - x^2).
%F A134490 a(n) = |A122574(n+2)| + A049666(n+1). (End)
%F A134490 a(n) = A000045(A016885(n)). - _Michel Marcus_, Nov 08 2013
%t A134490 Table[Fibonacci[5n + 3], {n, 0, 30}]
%o A134490 (Magma) [Fibonacci(5*n+3): n in [0..100]]; // _Vincenzo Librandi_, Apr 16 2011
%o A134490 (PARI) a(n)=fibonacci(5*n+3) \\ _Charles R Greathouse IV_, Jun 11 2015
%Y A134490 Cf. A000045, A102312, A099100, A134491.
%K A134490 nonn,easy
%O A134490 0,1
%A A134490 _Artur Jasinski_, Oct 28 2007
%E A134490 Offset changed to 0 by _R. J. Mathar_, Jul 28 2008