login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A223038 Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
2, 98, 3780, 255943, 10904199, 751990800, 33007705273, 2293741863398, 102466787449225, 7147587418650349, 323100169712798727, 22585791054054582654, 1029786157956416130280, 72077809347126994984977 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A223041

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..114

EXAMPLE

Some solutions for n=3

..0..1..2....0..1..2....0..1..0....0..1..0....0..1..2....0..1..2....0..0..1

..2..1..2....3..1..3....1..2..0....1..2..0....0..3..2....3..1..2....2..1..2

..0..0..1....1..1..0....0..3..3....1..3..3....3..3..2....0..3..0....2..3..2

CROSSREFS

Sequence in context: A317068 A316949 A317729 * A324266 A258399 A212838

Adjacent sequences:  A223035 A223036 A223037 * A223039 A223040 A223041

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 12 2013

STATUS

approved

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 November 14 04:56 EST 2019. Contains 329110 sequences. (Running on oeis4.)