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!)
A222698 Number of nX3 0..1 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order 1

%I #5 Feb 28 2013 17:24:49

%S 1,5,9,62,159,955,2609,15700,43653,265172,745702,4553731,12909315,

%T 79185348,225776986,1389425900,3979529099,24552464694,70573224611,

%U 436307645895,1257776479205,7789054758485,22508431431008,139583844197925

%N Number of nX3 0..1 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order

%C Column 3 of A222703

%H R. H. Hardin, <a href="/A222698/b222698.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 28 2013

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 24 18:57 EDT 2024. Contains 373689 sequences. (Running on oeis4.)