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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A087120 Smallest numbers having in binary representation exactly n maximal groups of consecutive zeros. 3
1, 0, 10, 42, 170, 682, 2730, 10922, 43690, 174762, 699050, 2796202, 11184810, 44739242, 178956970, 715827882, 2863311530, 11453246122, 45812984490, 183251937962, 733007751850, 2932031007402, 11728124029610, 46912496118442 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

A087116(a(n))=n and A087116(k)<n for k<a(n);

For n>1, a(n) = A020988(n-1).

LINKS

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Index entries for sequences related to binary expansion of n

FORMULA

a(0)=1, a(1)=0, a(2)=10, a(n)=4*a(n-1)+2.

MATHEMATICA

Join[{1, 0}, NestList[4#+2&, 10, 25]] (* Harvey P. Dale, Apr 20 2019 *)

CROSSREFS

Cf. A087118, A023416, A007088.

Sequence in context: A226988 A027171 A003822 * A222358 A321314 A027149

Adjacent sequences:  A087117 A087118 A087119 * A087121 A087122 A087123

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Aug 14 2003

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 November 17 11:02 EST 2019. Contains 329226 sequences. (Running on oeis4.)