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 A191844 #6 Jul 29 2013 15:39:45 %S A191844 0,1,2,3,4,5,6,7,8,10,11,12,13,14,16,18,19,21,22,23,26,29,31,34,36,37, %T A191844 38,42,47,50,55,58,60,61,62,68,76,81,89,94,97,99,100,101,110,123,131, %U A191844 144,152,157,160,162,163,164,178,199,212,233,246,254,259,262 %N A191844 Ordered nonnegative differences 3*f-g, where f and g are positive Fibonacci numbers (A000045). %t A191844 (See A191842.) %t A191844 Union[Select[3#[[1]]-#[[2]]&/@Tuples[Fibonacci[Range[20]],2],#>=0&]] (* _Harvey P. Dale_, Jul 29 2013 *) %Y A191844 Cf. A191842, A191843, A191845. %K A191844 nonn %O A191844 1,3 %A A191844 _Clark Kimberling_, Jun 17 2011