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!)
A302223 Number of n X 7 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #6 Sep 04 2022 15:15:56

%S 8,1934,15569,251254,3018243,42508145,553097760,7403262824,

%T 97939043966,1301831347709,17275065368012,229303687769069,

%U 3043569120232324,40395942785616147,536209245725631300,7116991167351864042

%N Number of n X 7 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A302224.

%H R. H. Hardin, <a href="/A302223/b302223.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302224.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 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 August 17 23:40 EDT 2024. Contains 375255 sequences. (Running on oeis4.)