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!)
A253042 Number of (n+2)X(6+2) 0..3 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order 1
22304, 8340, 12641, 24232, 53312, 115438, 262728, 567781, 1244649, 2698327, 6151232, 13388434, 29495278, 64808231, 144441535, 317896175, 705544550, 1545061244, 3414818954, 7610405399, 16762954363, 36864641439, 81481794108 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A253044

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..137

EXAMPLE

Some solutions for n=3

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

..2..0..0..1..1..3..3..0....1..1..0..1..0..1..0..1....0..2..2..0..2..2..0..2

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

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

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

CROSSREFS

Sequence in context: A119568 A204333 A252774 * A216202 A154094 A206656

Adjacent sequences:  A253039 A253040 A253041 * A253043 A253044 A253045

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 26 2014

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 4 02:40 EST 2021. Contains 349469 sequences. (Running on oeis4.)