login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A304346 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero. 1

%I

%S 64,752,1752,18855,127511,741942,4921043,36193582,250785575,

%T 1779945291,12929993002,94656684886,695667963845,5171776044984,

%U 38719889240747,291633802759322,2210618685640386,16857082428252540,129166332857398739

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

%C Column 7 of A304347.

%H R. H. Hardin, <a href="/A304346/b304346.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304347.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 11 2018

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 27 07:07 EDT 2021. Contains 347673 sequences. (Running on oeis4.)