%I
%S 0,3,5,6,17,33,41,45,47,48,87,215,279,311,327,335,339,341,342,353,423,
%T 1377,1889,2145,2273,2337,2369,2385,2393,2397,2399,2400,8615,12711,
%U 14759,15783,16295,16551,16679,16743,16775,16791,16799,16803,16805,16806,52113
%N Monotonic ordering of nonnegative differences 7^i2^j, for i>=0, j>=0.
%t c = 7; d = 2; t[i_, j_] := c^i  d^j;
%t u = Table[t[i, j], {i, 0, 40}, {j, 0, i*Log[d, c]}];
%t v = Union[Flatten[u ]]
%Y Cf. A192118.
%K nonn
%O 1,2
%A _Clark Kimberling_, Jun 23 2011
