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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A300965 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 304, 2145, 60730, 1550025, 40689759, 1111779576, 30150922994, 822562611004, 22465005602512, 613512002535449, 16760294348765415, 457851342586022696, 12507855255682109142, 341697407091052094924, 9334729194043851996141 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A300966.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300966.

Sequence in context: A270303 A187934 A300538 * A300922 A301530 A172228

Adjacent sequences:  A300962 A300963 A300964 * A300966 A300967 A300968

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 17 2018

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 September 21 07:08 EDT 2019. Contains 327253 sequences. (Running on oeis4.)