login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A068739
Width of the bit-masks
A068221
&
A068222
(number of digits in
A068223
&
A068224
).
6
1, 2, 5, 13, 31, 72, 156, 337, 701, 1452, 2964, 6001, 12108, 24324, 48871, 97988, 196224, 392768, 785946, 1572353, 3145554, 6291980
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..22.
FORMULA
a(1) = 1, a(n) = 2*
A068739
(n-1) +
A068059
(n-1) - 1
CROSSREFS
Sequence in context:
A363513
A180302
A116701
*
A063636
A076501
A369434
Adjacent sequences:
A068736
A068737
A068738
*
A068740
A068741
A068742
KEYWORD
nonn
AUTHOR
Antti Karttunen
, Feb 26 2002
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 March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)