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A203495 Number of 5Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns 0
3, 256, 25002, 3065704, 421158558, 61706303456, 9532999874792 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A203491

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A045824 A027860 A059947 * A051490 A232545 A177748

Adjacent sequences:  A203492 A203493 A203494 * A203496 A203497 A203498

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 02 2012

STATUS

approved

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Last modified February 25 05:11 EST 2020. Contains 332217 sequences. (Running on oeis4.)