A192147 Monotonic ordering of nonnegative differences 3^i-4^j, for 40>= i>=0, j>=0.

0, 2, 5, 8, 11, 17, 23, 26, 65, 77, 80, 179, 227, 239, 242, 473, 665, 713, 725, 728, 1163, 1931, 2123, 2171, 2183, 2186, 2465, 3299, 5537, 6305, 6497, 6545, 6557, 6560, 15587, 18659, 19427, 19619, 19667, 19679, 19682, 42665, 54953, 58025, 58793, 58985, 59033

Offset

1,2

Links

Table of n, a(n) for n=1..47.

Example

The differences accrue like this:
1-1
3-1
9-4.....9-1
27-16...27-4....27-1
81-64...81-16...81-4...81-1

Mathematica

c = 3; 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. A192148.

Sequence in context: A352143 A365808 A344719 * A226817 A154484 A129300

Adjacent sequences: A192144 A192145 A192146 * A192148 A192149 A192150

Keyword

nonn

Author

Clark Kimberling, Jun 24 2011

Status

approved