A192157 - OEIS

%I #6 Oct 21 2019 14:51:29

%S 0,2,8,18,26,72,80,162,234,242,648,720,728,1458,2106,2178,2186,5832,

%T 6480,6552,6560,13122,18954,19602,19674,19682,52488,58320,58968,59040,

%U 59048,118098,170586,176418,177066,177138,177146,472392,524880,530712,531360

%N Monotonic ordering of nonnegative differences 3^i-9^j, for 40>=i>=0, j>=0.

%t c = 3; d = 9; 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. A192158.

%K nonn

%O 1,2

%A _Clark Kimberling_, Jun 24 2011