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!)
A303409 Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 98, 730, 6322, 160247, 1716995, 24386918, 497878411, 6748940959, 106242067376, 1858501096856, 28169515094303, 452053058478307, 7483434704337764, 118104298097496073, 1903568189475537422, 30951192368001440803 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A303410.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A303410.

Sequence in context: A196327 A116130 A302527 * A264168 A116287 A290242

Adjacent sequences:  A303406 A303407 A303408 * A303410 A303411 A303412

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 23 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 07:28 EDT 2021. Contains 347596 sequences. (Running on oeis4.)