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!)
A297693 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s. 1

%I #4 Jan 03 2018 12:27:26

%S 34,1216,16931,378611,8377550,165522511,3487451085,73143230512,

%T 1513232424936,31582139334118,658460204051875,13706009242381030,

%U 285633419187642435,5951469700723156803,123981619727666622855

%N Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.

%C Column 7 of A297694.

%H R. H. Hardin, <a href="/A297693/b297693.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A297694.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2018

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 July 23 04:43 EDT 2024. Contains 374544 sequences. (Running on oeis4.)