login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A218844 Unmatched value maps: number of 3Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..1 3Xn array 1

%I

%S 1,21,93,453,2050,9516,44129,204780,950346,4410194,20465923,94974721,

%T 440743516,2045330613,9491634200,44047218242,204407115009,

%U 948579057090,4402010267626,20428127976053,94799509246526,439930030199648

%N Unmatched value maps: number of 3Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..1 3Xn array

%C Row 3 of A218842

%H R. H. Hardin, <a href="/A218844/b218844.txt">Table of n, a(n) for n = 1..53</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Nov 07 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 December 4 12:38 EST 2021. Contains 349514 sequences. (Running on oeis4.)