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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A300604 Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 74, 230, 1397, 11752, 110249, 1056816, 9684995, 92435041, 880584819, 8391672510, 79962511095, 763064081276, 7281278638212, 69463421784079, 662816884120372, 6324400190195839, 60344941962776127, 575795288992490918 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A300605.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300605.

Sequence in context: A204370 A204363 A051970 * A301329 A121809 A204361

Adjacent sequences:  A300601 A300602 A300603 * A300605 A300606 A300607

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 09 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 December 3 22:32 EST 2021. Contains 349468 sequences. (Running on oeis4.)