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!)
A295250 Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1s. 1
24, 327, 4928, 72745, 1081924, 16064421, 238620900, 3544087017, 52640098668, 781851094097, 11612685209818, 172480876774284, 2561824309264414, 38050266491011674, 565153045441419558, 8394105809782118020 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A295253.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A295253.

Sequence in context: A292298 A138453 A004317 * A295649 A188779 A262291

Adjacent sequences:  A295247 A295248 A295249 * A295251 A295252 A295253

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 18 2017

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 6 22:42 EST 2021. Contains 349567 sequences. (Running on oeis4.)