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 A194887 #44 Jul 20 2019 10:09:00
%S A194887 2,13,24,145,156,288,1729,1740,1872,3456,20737,20748,20880,22464,
%T A194887 41472,248833,248844,248976,250560,269568,497664,2985985,2985996,
%U A194887 2986128,2987712,3006720,3234816,5971968,35831809,35831820,35831952,35833536,35852544,36080640
%N A194887 Numbers that are the sum of two powers of 12.
%C A194887 Parity of this sequence is A073424.
%H A194887 Zak Seidov, <a href="/A194887/b194887.txt">Table of n, a(n) for n = 1..1000</a>
%e A194887 12^0 + 12^2 = 145
%t A194887 t = 12^Range[0, 9]; Select[Union[Flatten[Table[i + j, {i, t}, {j, t}]]], # <= t[[-1]] + 1 &] (* _T. D. Noe_, Oct 09 2011 *)
%t A194887 Total/@Tuples[12^Range[0,10],2]//Union (* _Harvey P. Dale_, Jul 20 2019 *)
%Y A194887 Cf. A001021, A033048, A052216, A073424.
%K A194887 nonn,tabl
%O A194887 1,1
%A A194887 _Jeremy Gardiner_, Oct 09 2011
%E A194887 Typo in example corrected by _Zak Seidov_, Oct 23 2011