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!)
A265970 Number of nX5 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique. 1
1252, 38096, 89776, 230784, 631264, 1820904, 5120120, 14529352, 40869008, 116148576, 330124104, 935364856, 2641623616, 7497789512, 21321031376, 60505118208, 171246024504, 485965902816, 1381610459280, 3923852199568 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A265973.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..1..4..4..3..0....2..0..4..4..3....0..4..3..0..1....0..1..4..3..3

..3..0..0..3..1....3..0..1..1..0....3..1..1..4..3....0..3..4..0..1

..3..1..1..4..4....1..4..3..3..0....3..0..2..2..3....2..3..1..0..4

CROSSREFS

Cf. A265973.

Sequence in context: A045186 A344034 A344035 * A264291 A265925 A252149

Adjacent sequences:  A265967 A265968 A265969 * A265971 A265972 A265973

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 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 8 17:01 EST 2021. Contains 349596 sequences. (Running on oeis4.)