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 A169691 #4 Aug 30 2015 14:11:39
%S A169691 1,3,4,8,11,12,21,29,32,33,55,76,84,87,88,144,199,220,228,231,232,377,
%T A169691 521,576,597,605,608,609,987,1364,1508,1563,1584,1592,1595,1596,2584,
%U A169691 3571,3948,4092,4147,4168,4176,4179,4180,6765,9349,10336,10713,10857,10912,10933
%N A169691 Let T be the sequence Fibonacci(2n+1), n>=0 (cf. A001519); sequence lists the differences T(j)-T(i) for i<j.
%C A169691 See Comments in A169691.
%t A169691 Module[{nn=31,fbs},fbs=Fibonacci[Range[1,nn,2]];Sort[Flatten[Table[ fbs[[n]]- Take[fbs,n-1],{n,nn/2}]]]] (* _Harvey P. Dale_, Aug 30 2015 *)
%Y A169691 Cf. A000045, A001519, A169690, A169692, A169693, A169677-A169680.
%K A169691 nonn
%O A169691 1,2
%A A169691 _N. J. A. Sloane_, Apr 14 2010