login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A192161 Monotonic ordering of nonnegative differences 4^i-5^j, for 40>= i>=0, j>=0. 3
0, 3, 11, 15, 39, 59, 63, 131, 231, 251, 255, 399, 759, 899, 971, 999, 1019, 1023, 3471, 3971, 4071, 4091, 4095, 13259, 15759, 16259, 16359, 16379, 16383, 49911, 62411, 64911, 65411, 65511, 65531, 65535, 184019, 246519, 259019, 261519, 262019, 262119, 262139 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..43.

EXAMPLE

The differences accrue like this:

1-1

4-1

16-5......16-1

64-25.....64-5.....64-1

256-125...256-25...256-5...256-1

MATHEMATICA

c = 4; d = 5; 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. A192162.

Sequence in context: A146254 A039503 A276971 * A199262 A158507 A030765

Adjacent sequences:  A192158 A192159 A192160 * A192162 A192163 A192164

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jun 24 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 7 15:47 EDT 2022. Contains 355994 sequences. (Running on oeis4.)