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!)
A275357 Number of 7Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-2) and new values introduced in order 0..2. 1
365, 13824, 70272, 982152, 17258544, 306863916, 5814135340, 110244645536, 2098489810224, 40114251782424, 766949039546240, 14666714552507552, 280570769528044520, 5367279019878620308, 102680304956049984556 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A275352.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..65

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Cf. A275352.

Sequence in context: A276253 A233116 A208433 * A275147 A275227 A281610

Adjacent sequences:  A275354 A275355 A275356 * A275358 A275359 A275360

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 24 2016

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 25 15:27 EDT 2021. Contains 347658 sequences. (Running on oeis4.)