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 A107258 #5 Jul 15 2012 07:07:51
%S A107258 25,32,43,51,52,54,59,64,72,73,75,77,82,84,85,88,97,98,101,102,103,
%T A107258 109,111,114,115,116,119,124,127,129,130,131,132,135,140,142,143,148,
%U A107258 151,152,162,163,164,168,169,177,178,181,182,183,185,186,188,196,197
%N A107258 Numbers not representable as Fibonacci(i) + triangular(j), i,j>=0.
%C A107258 A107259(a(n)) = 0.
%t A107258 With[{nn=200},Select[Complement[Range[nn],Union[Flatten[Outer[Plus, Join[{0},Fibonacci[Range[12]]],Accumulate[Range[19]]]]]],#<nn&]] (* _Harvey P. Dale_, Jul 15 2012 *)
%K A107258 nonn
%O A107258 1,1
%A A107258 _Ralf Stephan_, May 15 2005