login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A203037 Number of 7Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns 0
4, 20228, 77256180, 539443637988, 4274880689220682 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A203031

LINKS

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

EXAMPLE

Some.solutions.for.n=4

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A331667 A053015 A089210 * A241214 A034014 A217600

Adjacent sequences:  A203034 A203035 A203036 * A203038 A203039 A203040

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 27 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 21 06:36 EDT 2022. Contains 353889 sequences. (Running on oeis4.)