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!)
A265633 Number of nX4 0..n*4-1 arrays with upper left zero and lower right n*4-1 and each element differing from its horizontal, diagonal and antidiagonal neighbors by a power of two. 1
2, 559, 85492, 2723409, 3979565339, 796308532514, 168471146612539, 92689740495424484, 35207791095370659034, 14785029526528063866456, 7605208617717963440942640, 3423109300796521198266195848 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A265635.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..36

EXAMPLE

Some solutions for n=3

..0..4..0..2....0..2..0..8....0..8..9..1....0..2..3.11....0..8.10..8

..3..2..3..1....1..2.10..8....7..8..9.10....0..4..3..2....7..8..7..8

..6..4..3.11...10..9.10.11....9.11..9.11....5..1..3.11....9..8.10.11

CROSSREFS

Cf. A265635.

Sequence in context: A058429 A336784 A201247 * A117509 A285690 A201603

Adjacent sequences:  A265630 A265631 A265632 * A265634 A265635 A265636

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 11 2015

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 1 01:37 EST 2021. Contains 349426 sequences. (Running on oeis4.)