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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A204739 Number of (n+1)X8 0..1 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero 1

%I

%S 511,5219,50177,476919,4484324,41716355,384523522,3504247804,

%T 31566721277,280920331934,2471233351768,21510581598211,

%U 185527816735040,1588088987381607,13511723296065256,114430286873282233

%N Number of (n+1)X8 0..1 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero

%C Column 7 of A204740

%H R. H. Hardin, <a href="/A204739/b204739.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 18 2012

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 October 15 10:15 EDT 2019. Contains 328026 sequences. (Running on oeis4.)