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 A192159 #6 Oct 21 2019 14:52:10
%S A192159 0,2,8,17,26,71,80,143,233,242,629,719,728,1187,2087,2177,2186,5561,
%T A192159 6461,6551,6560,9683,18683,19583,19673,19682,49049,58049,58949,59039,
%U A192159 59048,77147,167147,176147,177047,177137,177146,431441,521441,530441,531341,531431
%N A192159 Monotonic ordering of nonnegative differences 3^i-10^j, for 40>= i>=0, j>=0.
%t A192159 c = 3; d = 10; t[i_, j_] := c^i - d^j;
%t A192159 u = Table[t[i, j], {i, 0, 40}, {j, 0, i*Log[d, c]}];
%t A192159 v = Union[Flatten[u ]]
%Y A192159 Cf. A192160.
%K A192159 nonn
%O A192159 1,2
%A A192159 _Clark Kimberling_, Jun 24 2011