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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A197474 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,0,0,0 for x=0,1,2,3,4 1
5, 98, 1300, 10934, 151748, 1265828, 16544206, 145244408, 1830370547, 16537658774, 202870487557, 1878224690406, 22527034080238, 212875475502774, 2505004507267645, 24087191716817350, 278905922435987885 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Every 0 is next to 0 0's, every 1 is next to 1 1's, every 2 is next to 2 0's, every 3 is next to 3 0's, every 4 is next to 4 0's

Column 7 of A197475

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions containing all values 0 to 4 for n=4

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

..0..4..0..2..1..0..3....1..2..0..4..0..2..0....0..3..0..2..1..0..3

..1..0..4..0..1..2..0....0..2..1..0..3..1..2....3..0..3..1..0..4..0

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

CROSSREFS

Sequence in context: A215299 A088995 A093749 * A301307 A277418 A318061

Adjacent sequences:  A197471 A197472 A197473 * A197475 A197476 A197477

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 15 2011

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 June 19 12:57 EDT 2019. Contains 324222 sequences. (Running on oeis4.)