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A230532 Number of nX5 0..6 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 7, and upper left element zero 0
0, 0, 52, 35170, 3535192, 286234664, 22890686508, 1826093367100, 144759756844954 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 5 of A230533

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

..0..1..2..3..4....0..1..2..3..4....0..1..4..5..6....0..6..5..4..3

..6..0..2..1..5....6..3..2..2..5....6..2..3..6..0....1..2..5..6..2

..5..4..3..0..6....5..4..1..0..6....5..4..3..2..1....2..3..4..0..1

CROSSREFS

Sequence in context: A208305 A098148 A068255 * A157280 A182924 A208785

Adjacent sequences:  A230529 A230530 A230531 * A230533 A230534 A230535

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 22 2013

STATUS

approved

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Last modified June 22 03:55 EDT 2021. Contains 345367 sequences. (Running on oeis4.)