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A192112
Monotonic ordering of nonnegative differences 2^i-4^j, for 40>=i>=0, j>=0.
3
0, 1, 3, 4, 7, 12, 15, 16, 28, 31, 48, 60, 63, 64, 112, 124, 127, 192, 240, 252, 255, 256, 448, 496, 508, 511, 768, 960, 1008, 1020, 1023, 1024, 1792, 1984, 2032, 2044, 2047, 3072, 3840, 4032, 4080, 4092, 4095, 4096, 7168, 7936, 8128, 8176, 8188, 8191, 12288
OFFSET
1,3
MATHEMATICA
c = 2; d = 4; t[i_, j_] := c^i - d^j;
u = Table[t[i, j], {i, 0, 40}, {j, 0, i*Log[d, c]}];
v = Union[Flatten[u ]]
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jun 23 2011
STATUS
approved