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!)
A222954 Number of n X n 0..1 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope. 0
2, 2, 16, 16, 512, 512, 323600, 144930, 1808243216, 615667968 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Main diagonal of A222959.

Sequence in context: A016740 A193145 A133922 * A240033 A088139 A152556

Adjacent sequences:  A222951 A222952 A222953 * A222955 A222956 A222957

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Mar 10 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 May 18 15:25 EDT 2021. Contains 343995 sequences. (Running on oeis4.)