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!)
A197887 Number of nX6 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
1, 43, 196, 2263, 17890, 129294, 1134527, 9389938, 74334188, 612587633, 4957017898, 40458420396, 328259829544, 2682720603080, 21878875862100, 178129467799644, 1450139820586951, 11818051611475707, 96281373184386270 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

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 6 of A197889

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..184

EXAMPLE

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

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

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

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

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

CROSSREFS

Sequence in context: A309905 A142115 A141941 * A342509 A145650 A142527

Adjacent sequences:  A197884 A197885 A197886 * A197888 A197889 A197890

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 June 20 01:09 EDT 2021. Contains 345154 sequences. (Running on oeis4.)