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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A203388 Number of nX7 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 0
1, 86156, 1678700434, 10639041328647, 61265314914283103 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A203389

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=4

..4..4..2..2..0..4..4....4..4..3..3..0..4..4....0..5..5..5..4..5..5

..4..6..6..2..5..5..4....6..6..3..4..4..4..4....5..5..5..6..6..5..5

..4..6..6..3..5..5..2....6..6..3..4..5..5..4....5..0..4..6..6..5..3

..0..1..1..0..0..0..0....5..5..0..0..5..5..0....5..5..5..5..0..0..0

CROSSREFS

Sequence in context: A234805 A186065 A238309 * A206657 A231322 A237783

Adjacent sequences:  A203385 A203386 A203387 * A203389 A203390 A203391

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 01 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified December 20 19:29 EST 2014. Contains 252289 sequences.