login
This site is supported by donations to The OEIS Foundation.

 

Logo


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: A098501 A180302 A116701 * A063636 A076501 A307569

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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 22 14:46 EDT 2019. Contains 325224 sequences. (Running on oeis4.)