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!)
A316539 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 4, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 4, 26, 136, 4219, 114514, 5074646, 681913008, 140688693646, 48442426003864, 36951311160860211 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A316545.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=5

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

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

..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

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

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

CROSSREFS

Cf. A316545.

Sequence in context: A184263 A058408 A053906 * A197964 A100236 A229278

Adjacent sequences:  A316536 A316537 A316538 * A316540 A316541 A316542

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 06 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 2 05:01 EST 2021. Contains 349437 sequences. (Running on oeis4.)