login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A229365 Number of n X n 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally 1
3, 38, 1610, 222990, 104382552, 162794962814, 851668326534130, 14897378230939391994, 872764112558460116016396, 171094770747292212524499798502, 112292092887713869652391305250607824 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A229372

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..13

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A062155 A278927 A099022 * A136638 A213002 A213003

Adjacent sequences:  A229362 A229363 A229364 * A229366 A229367 A229368

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 21 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 January 22 13:41 EST 2020. Contains 331149 sequences. (Running on oeis4.)