The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A300137 Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Feb 26 2018 08:02:37

%S 1,22,673,3273,80126,1118800,20405641,375468115,6965745267,

%T 133609996968,2564144922717,49584317553511,961358616451397,

%U 18667709860965983,362920266075365594,7059147752281679470,137357501865894599487

%N Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A300138.

%H R. H. Hardin, <a href="/A300137/b300137.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300138.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 26 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 May 13 15:16 EDT 2024. Contains 372520 sequences. (Running on oeis4.)