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A239825 Number of 7Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it, modulo 4 1
293, 78188, 28156167, 9807771898, 3347474694032, 1154988223050638, 399696014140196630, 138146553326582677362, 47759100046784529992245, 16518942523671833416785350, 5714008803899171208707626059 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A239819

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A241047 A085502 A108828 * A145206 A153579 A132187

Adjacent sequences:  A239822 A239823 A239824 * A239826 A239827 A239828

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 27 2014

STATUS

approved

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Last modified November 29 15:15 EST 2020. Contains 338769 sequences. (Running on oeis4.)