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!)
A303256 Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 20 2018 11:11:08

%S 0,111,1183,8664,106803,1218385,13529019,153269484,1719616546,

%T 19364602930,218131990331,2454766315292,27636145270965,

%U 311127611619222,3502509703999865,39430191355003478,443891694271539222

%N Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 5 of A303254.

%H R. H. Hardin, <a href="/A303256/b303256.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303254.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 20 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 April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)