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!)
A316120 Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jun 24 2018 16:34:27

%S 1,26,47,213,1109,5426,26626,133245,708063,3653857,18764147,97933770,

%T 509275871,2641581998,13734083323,71435032340,371258276206,

%U 1929981180495,10035489710904,52173575660786,271248632206329,1410301795143440

%N Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 5 of A316123.

%H R. H. Hardin, <a href="/A316120/b316120.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316123.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jun 24 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 July 25 15:49 EDT 2024. Contains 374612 sequences. (Running on oeis4.)