A209468 - OEIS

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A209468

Number of n X n 0..2 arrays with every element value z a city block distance of exactly z from another element value z

0

1, 13, 2262, 2497939, 18325569581, 997395684898288, 423899279234753748599

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Diagonal of A209476

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A013718 A145187 A221896 * A270872 A141077 A202517

Adjacent sequences: A209465 A209466 A209467 * A209469 A209470 A209471

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 09 2012

STATUS

approved