login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A209217 Number of nX2 0..7 arrays with every element value z a city block distance of exactly z from another element value z 0
2, 13, 115, 1468, 22738, 415695, 8685016, 187123430 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A209218

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=5

..1..0....3..4....4..0....4..4....0..1....1..1....4..2....1..5....5..4....1..1

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

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

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

..2..1....3..4....4..2....4..4....1..1....1..1....4..2....5..2....0..5....0..2

CROSSREFS

Sequence in context: A209718 A208958 A209052 * A000180 A215715 A292437

Adjacent sequences:  A209214 A209215 A209216 * A209218 A209219 A209220

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 06 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 | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 16 12:34 EDT 2018. Contains 316263 sequences. (Running on oeis4.)