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!)
A275400 Number of nX7 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,0) or (-1,1) and new values introduced in order 0..2. 1
365, 69984, 65344, 186538, 566331, 4142271, 30551417, 232200615, 1766745035, 13518543301, 103511190946, 793366592691, 6084436180732, 46693188566604, 358610775107181, 2756060353163818, 21192914770286797, 163023210361243535 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A275401.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..195

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A275401.

Sequence in context: A281610 A233072 A275503 * A275265 A233097 A223386

Adjacent sequences:  A275397 A275398 A275399 * A275401 A275402 A275403

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 26 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 02:25 EDT 2021. Contains 347651 sequences. (Running on oeis4.)