A192166 Monotonic ordering of nonnegative differences 7^i-4^j, for 40>=i>=0, j>=0.

0, 3, 6, 33, 45, 48, 87, 279, 327, 339, 342, 423, 1377, 2145, 2337, 2385, 2397, 2400, 12711, 15783, 16551, 16743, 16791, 16803, 16806, 52113, 101265, 113553, 116625, 117393, 117585, 117633, 117645, 117648, 561399, 758007, 807159, 819447, 822519, 823287

Offset

1,2

Links

Table of n, a(n) for n=1..40.

Mathematica

c = 7; 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 ]]

Crossrefs

Cf. A192165.

Sequence in context: A133665 A124178 A284633 * A297444 A184508 A101142

Adjacent sequences: A192163 A192164 A192165 * A192167 A192168 A192169

Keyword

nonn

Author

Clark Kimberling, Jun 24 2011

Status

approved