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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A203877 Number of (n+1)X8 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order 1
3188647, 4631370535, 6726865579687, 9803443695486967, 14294949784964335495, 20848169781599252276647, 30407052005824642303153447, 44349315527117554056938865367, 64684656141868016921281663326727 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A203878

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..21

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A234449 A204629 A235070 * A032783 A034638 A122034

Adjacent sequences:  A203874 A203875 A203876 * A203878 A203879 A203880

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 07 2012

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 September 18 18:15 EDT 2019. Contains 327178 sequences. (Running on oeis4.)