[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A210787 Number of nX7 1..4 arrays with no element with value z exactly a city block distance of z from another element with value z 0
3962, 710895, 23759000, 890122678, 37591420090, 1928958791380 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A210788
LINKS
Table of n, a(n) for n=1..6.
EXAMPLE
Some solutions for n=4
..3..4..3..1..4..1..4....3..4..2..1..3..3..1....2..2..3..3..1..2..4
..4..3..1..2..1..3..4....1..3..1..4..2..3..4....1..4..3..1..4..2..1
..3..1..3..1..3..1..2....3..2..4..1..4..4..1....4..1..4..4..1..4..3
..1..4..1..3..2..3..4....1..3..1..3..1..2..4....2..4..1..2..4..3..2
CROSSREFS
Sequence in context: A007038 A222783 A107540 * A232430 A163111 A045247
Adjacent sequences: A210784 A210785 A210786 * A210788 A210789 A210790
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 26 2012
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 29 05:26 EDT 2024. Contains 375510 sequences. (Running on oeis4.)