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!)
A222042 Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..7 array extended with zeros and convolved with -1,2,-1 1

%I

%S 2,4,8,15,27,47,80,134,222,365,596,970,1575,2554,4138,6701,10848,

%T 17558,28415,45982,74406,120397,194812,315218,510039,825266,1335314,

%U 2160589,3495912,5656510,9152431,14808950,23961390,38770349,62731748,101502106

%N Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..7 array extended with zeros and convolved with -1,2,-1

%C Column 7 of A222043

%H R. H. Hardin, <a href="/A222042/b222042.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=7, one extended zero followed by filtered positions

%e ..0....1....1....0....0....0....1....0....1....1....0....0....0....0....1....1

%e ..1....0....0....1....0....0....0....1....0....0....0....0....0....1....0....0

%e ..0....0....0....0....1....0....1....0....1....0....0....1....1....0....0....0

%e ..1....0....1....0....0....1....0....0....0....0....0....0....0....0....0....0

%e ..0....0....0....1....0....0....0....0....1....1....0....1....0....1....0....1

%e ..1....0....1....0....1....0....0....0....0....0....0....0....1....0....0....0

%e ..0....0....0....0....0....0....0....1....0....1....0....0....0....0....1....0

%e ..1....0....0....0....0....1....0....0....0....0....0....0....1....1....0....1

%e ..0....1....0....0....0....0....0....1....0....1....0....1....0....0....1....0

%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2013

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 January 28 23:12 EST 2022. Contains 350670 sequences. (Running on oeis4.)