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!)
A229405 Number of n X n 0..3 arrays avoiding 11 horizontally, 22 vertically, 33 antidiagonally and 00 diagonally 1
4, 163, 53538, 142475606, 3113479414050, 555943964324988272, 812793729526357032659346, 9723835061406716550009482645332, 952115739439339063251356375563511227580 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A229412

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..10

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A222394 A306350 A125532 * A211157 A185857 A347719

Adjacent sequences:  A229402 A229403 A229404 * A229406 A229407 A229408

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 22 2013

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 October 26 00:52 EDT 2021. Contains 348256 sequences. (Running on oeis4.)