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!)
A197888 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,1,1 for x=0,1,2,3,4 1
3, 78, 529, 10827, 92843, 1134527, 13253562, 145351090, 1728849664, 19259087568, 227927217325, 2573394846501, 29961925871053, 341720932452731, 3939440439598059, 45203853693284547, 520558824415292051 (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 2's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 1's

Column 7 of A197889

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..63

EXAMPLE

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

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

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

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

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

CROSSREFS

Sequence in context: A065993 A097802 A119200 * A301394 A271182 A306817

Adjacent sequences:  A197885 A197886 A197887 * A197889 A197890 A197891

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 19 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 April 16 23:40 EDT 2021. Contains 343051 sequences. (Running on oeis4.)