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A209363 Number of nX4 1..3 arrays with every element value z a city block distance of exactly z from another element value z 1
3, 122, 10796, 804545, 42033202, 2043431891, 95757163046, 4450804913246, 208608618878322, 9821357826542694, 464584671831559050, 22043049977515754013, 1047048789075528283907, 49710984903586449661602 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A209365

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..28

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A156001 A229633 A171357 * A012569 A078258 A258658

Adjacent sequences:  A209360 A209361 A209362 * A209364 A209365 A209366

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 06 2012

STATUS

approved

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Last modified February 26 09:39 EST 2020. Contains 332277 sequences. (Running on oeis4.)