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!)
A283097 Number of nX5 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements. 1

%I #4 Feb 28 2017 10:59:52

%S 2,142,4607,107007,2231690,42681282,774403237,13508097744,

%T 228643318057,3779831485411,61301958031506,978593190144974,

%U 15415280790236212,240088085281666402,3702829542983428526,56621929465854143683

%N Number of nX5 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.

%C Column 5 of A283100.

%H R. H. Hardin, <a href="/A283097/b283097.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A283100.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 28 2017

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 7 15:50 EDT 2024. Contains 375017 sequences. (Running on oeis4.)