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!)
A284162 Number of n X 5 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. 1

%I

%S 10,134,2872,80072,2179255,63520018,1852406216,55270158210,

%T 1656400271264,50135651563711,1524221988811958,46590358960961268,

%U 1429160917194970783,43992270165786177866,1357848185549167921892,42014950110987162854896

%N Number of n X 5 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

%C Column 5 of A284165.

%H R. H. Hardin, <a href="/A284162/b284162.txt">Table of n, a(n) for n = 1..77</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A284165.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 21 2017

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 24 14:46 EDT 2021. Contains 347643 sequences. (Running on oeis4.)