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!)
A300643 Number of nX5 0..1 arrays with every element equal to 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 10 2018 10:38:24

%S 0,9,30,316,2998,28089,268615,2552014,24338903,231985285,2211326264,

%T 21081277233,200957956858,1915723519711,18262175095417,

%U 174090604742721,1659575837493437,15820464143773812,150813856777262673

%N Number of nX5 0..1 arrays with every element equal to 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A300646.

%H R. H. Hardin, <a href="/A300643/b300643.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300646.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 10 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 19 06:29 EDT 2024. Contains 375284 sequences. (Running on oeis4.)