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 A192155 #6 Oct 21 2019 14:50:46
%S A192155 0,1,2,8,17,19,26,73,80,179,217,235,242,665,721,728,1675,2123,2179,
%T A192155 2186,2465,6049,6497,6553,6560,15587,19171,19619,19675,19682,26281,
%U A192155 54953,58537,58985,59041,59048,144379,173051,176635,177083,177139,177146,269297
%N A192155 Monotonic ordering of nonnegative differences 3^i-8^j, for 40>= i>=0, j>=0.
%t A192155 c = 3; d = 8; t[i_, j_] := c^i - d^j;
%t A192155 u = Table[t[i, j], {i, 0, 40}, {j, 0, i*Log[d, c]}];
%t A192155 v = Union[Flatten[u ]]
%Y A192155 Cf. A192156.
%K A192155 nonn
%O A192155 1,3
%A A192155 _Clark Kimberling_, Jun 24 2011