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A230828 Number of nX5 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, no adjacent elements equal, and upper left element zero 1
0, 16, 38, 176, 898, 4350, 22852, 122740, 661598, 3593650, 19572998, 106801924, 583264796, 3186690816, 17414382012, 95176462582, 520213927428, 2843500943294, 15543058517272, 84962392690912, 464431030442718, 2538739709562252 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 5 of A230831

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A166112 A224738 A304014 * A122030 A122029 A218900

Adjacent sequences:  A230825 A230826 A230827 * A230829 A230830 A230831

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 30 2013

STATUS

approved

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Last modified September 21 16:31 EDT 2021. Contains 347598 sequences. (Running on oeis4.)