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A209607 Number of nX5 1..2 arrays with every element value z a city block distance of exactly z from another element value z 1
2, 170, 6218, 151736, 3833954, 95442732, 2375975754, 59592537600, 1495366951690, 37503163842366, 940455006943040, 23582406579072110, 591339672010632278, 14828301442081160268, 371832301227736747532, 9324007193364231632484 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A209610

LINKS

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

EXAMPLE

Some solutions for n=4

..1..2..2..1..2....2..2..2..1..1....1..2..1..2..2....1..1..2..1..1

..1..2..2..1..1....2..2..1..2..1....1..2..1..1..1....2..2..1..1..2

..2..1..2..1..2....1..1..1..1..1....1..2..2..2..2....1..2..2..1..2

..1..1..2..2..2....1..2..2..1..2....1..2..1..1..2....1..1..2..1..2

CROSSREFS

Sequence in context: A157316 A007760 A230511 * A243230 A051030 A339641

Adjacent sequences:  A209604 A209605 A209606 * A209608 A209609 A209610

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 10 2012

STATUS

approved

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Last modified January 17 23:09 EST 2021. Contains 340249 sequences. (Running on oeis4.)