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!)
A298845 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero. 1

%I

%S 8,1933,3820,14888,62393,290474,1276034,5745665,26250580,117940632,

%T 529830532,2398014801,10851357559,49048617886,221887809644,

%U 1004033294806,4542287520456,20553927069804,93029936095342,421086056398025

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A298846.

%H R. H. Hardin, <a href="/A298845/b298845.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298846.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 27 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 June 29 23:00 EDT 2022. Contains 354913 sequences. (Running on oeis4.)