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!)
A222901 Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1

%I

%S 1,7,45,767,4909,119393,759891,20299463,130579169,3588643955,

%T 23230932391,647426033879,4209052934053,118324983126455,

%U 771976078016995,21829828686370139,142850851773130033,4056660324820606967

%N Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

%C Column 3 of A222906

%H R. H. Hardin, <a href="/A222901/b222901.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..1..1....0..0..1....0..0..0....0..0..1....0..0..1

%e ..0..0..0....0..0..0....1..1..1....2..0..0....0..0..0....2..2..2....0..0..0

%e ..0..0..0....0..0..0....1..1..1....0..0..0....0..1..1....2..2..2....0..0..0

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 09 2013

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 August 10 04:38 EDT 2020. Contains 336368 sequences. (Running on oeis4.)