A192166 - OEIS

%I #6 Oct 21 2019 14:59:51

%S 0,3,6,33,45,48,87,279,327,339,342,423,1377,2145,2337,2385,2397,2400,

%T 12711,15783,16551,16743,16791,16803,16806,52113,101265,113553,116625,

%U 117393,117585,117633,117645,117648,561399,758007,807159,819447,822519,823287

%N Monotonic ordering of nonnegative differences 7^i-4^j, for 40>=i>=0, j>=0.

%t c = 7; d = 4; 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. A192165.

%K nonn

%O 1,2

%A _Clark Kimberling_, Jun 24 2011