A192169 - OEIS

A192169

Monotonic ordering of nonnegative differences 4^i-9^j, for 40>= i>=0, j>=0.

%I #6 Oct 21 2019 15:02:02

%S 0,3,7,15,55,63,175,247,255,295,943,1015,1023,3367,4015,4087,4095,

%T 6487,9823,15655,16303,16375,16383,58975,64807,65455,65527,65535,

%U 203095,255583,261415,262063,262135,262143,517135,989527,1042015,1047847,1048495,1048567

%N Monotonic ordering of nonnegative differences 4^i-9^j, for 40>= i>=0, j>=0.

%t c = 4; 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. A192170.

%K nonn

%O 1,2

%A _Clark Kimberling_, Jun 24 2011