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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A198907 Number of n X n 0..7 arrays with values 0..7 introduced in row major order and no element equal to any horizontal or vertical neighbor 1
1, 4, 2051, 319608038, 4717456775959530, 2869765342757082981876352 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A198914

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions with values 0 to 7 for n=3

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

..3..4..5....3..4..5....3..4..5....3..4..1....3..4..5....3..4..5....3..4..5

..6..7..4....1..6..7....4..6..7....5..6..7....2..6..7....6..0..7....6..2..7

CROSSREFS

Sequence in context: A024060 A198716 A004815 * A207863 A220941 A012869

Adjacent sequences:  A198904 A198905 A198906 * A198908 A198909 A198910

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 31 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 July 21 21:14 EDT 2019. Contains 325199 sequences. (Running on oeis4.)