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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A267782 Number of n X n 0..1 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value. 0
2, 16, 216, 5081, 122770, 4245574, 132388406, 5520112546, 217360101006, 10635681264937 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A267788.

LINKS

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

EXAMPLE

Some solutions for n=4

..1..0..0..1....0..1..1..0....0..0..0..0....1..1..1..1....0..1..0..0

..0..0..0..0....0..1..0..0....0..1..1..0....0..0..0..0....1..0..1..1

..1..1..1..1....1..0..0..1....1..1..0..1....1..1..0..1....0..1..0..0

..1..1..0..1....1..1..1..1....1..0..1..1....0..1..1..0....1..0..0..1

CROSSREFS

Cf. A267788.

Sequence in context: A114531 A012056 A062971 * A012164 A264543 A223638

Adjacent sequences:  A267779 A267780 A267781 * A267783 A267784 A267785

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 20 2016

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 December 4 21:30 EST 2020. Contains 338939 sequences. (Running on oeis4.)