A192169 Monotonic ordering of nonnegative differences 4^i-9^j, for 40>= i>=0, j>=0.

0, 3, 7, 15, 55, 63, 175, 247, 255, 295, 943, 1015, 1023, 3367, 4015, 4087, 4095, 6487, 9823, 15655, 16303, 16375, 16383, 58975, 64807, 65455, 65527, 65535, 203095, 255583, 261415, 262063, 262135, 262143, 517135, 989527, 1042015, 1047847, 1048495, 1048567

Offset

1,2

Links

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

Mathematica

c = 4; d = 9; 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. A192170.

Sequence in context: A080567 A276969 A146448 * A290470 A268061 A298358

Adjacent sequences: A192166 A192167 A192168 * A192170 A192171 A192172

Keyword

nonn

Author

Clark Kimberling, Jun 24 2011

Status

approved