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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A297731 Number of nX6 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s. 1
1, 61, 223, 1103, 11341, 65215, 414651, 3199929, 21221319, 144970307, 1047053494, 7264521347, 50855971280, 362028443523, 2549685989975, 18010279437728, 127888224042540, 905521633348229, 6418498452393980, 45573582767848687 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A297733.

LINKS

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

EXAMPLE

Some solutions for n=6

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

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

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

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

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

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

CROSSREFS

Cf. A297733.

Sequence in context: A171585 A038643 A273364 * A228130 A142267 A034863

Adjacent sequences:  A297728 A297729 A297730 * A297732 A297733 A297734

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 04 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 October 17 21:37 EDT 2019. Contains 328134 sequences. (Running on oeis4.)