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!)
A281609 Number of 6Xn 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. 1
122, 9188, 95623, 2563481, 69506779, 1732267694, 44428349137, 1138837839480, 29102840547371, 744335104686091, 19034344218360000, 486715748229292254, 12445950255418792107, 318255588377585182015, 8138127052120466124265 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A281605.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..139

EXAMPLE

Some solutions for n=3

..0..1..2. .0..1..0. .0..1..0. .0..0..1. .0..1..2. .0..1..0. .0..1..1

..2..1..2. .2..2..0. .0..2..0. .2..2..1. .0..2..1. .0..2..1. .2..0..2

..2..1..2. .1..0..1. .2..1..0. .0..0..1. .1..2..0. .1..0..1. .1..0..1

..2..0..2. .1..0..2. .1..0..2. .1..2..2. .1..0..1. .1..0..1. .1..0..1

..0..1..2. .2..0..1. .1..0..1. .0..1..0. .1..2..1. .2..0..2. .2..2..1

..2..1..0. .1..0..1. .2..2..0. .2..1..0. .1..0..1. .1..1..2. .0..0..1

CROSSREFS

Cf. A281605.

Sequence in context: A275356 A275146 A275226 * A233071 A316526 A324453

Adjacent sequences:  A281606 A281607 A281608 * A281610 A281611 A281612

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 25 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 September 21 12:54 EDT 2021. Contains 347598 sequences. (Running on oeis4.)