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

 

Logo

The October issue of the Notices of the Amer. Math. Soc. has an article about the OEIS.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A267642 Number of nX6 0..1 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order. 1
11, 242, 1353, 12623, 47715, 343145, 1117207, 7479533, 22499181, 150415627, 429242911, 2954085199, 8086558295, 58043181513, 153186588731, 1151896473495, 2939148319421, 23154681921613, 57239339798173, 471401152901559 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A267644.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A267644.

Sequence in context: A090921 A089328 A077422 * A267665 A196258 A121826

Adjacent sequences:  A267639 A267640 A267641 * A267643 A267644 A267645

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 18 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 22 15:16 EDT 2018. Contains 315270 sequences. (Running on oeis4.)