A209174 - OEIS

A209174

Number of nX2 0..3 arrays with every element value z a city block distance of exactly z from another element value z

2, 13, 115, 1243, 11598, 110995, 1053489, 9540747, 85820627, 770618921, 6892469296, 61437526441, 548885702669, 4911226981619, 43974803859339, 394217661482450, 3536470866223484, 31727866780706631, 284622463808862333

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OFFSET

1,1

COMMENTS

Column 2 of A209178

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A110369 A212071 A258620 * A209718 A208958 A209052

Adjacent sequences: A209171 A209172 A209173 * A209175 A209176 A209177

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 05 2012

STATUS

approved