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A239997 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4 1
5, 42, 526, 6527, 86360, 1225281, 18392485, 290513038, 4767970186, 80410934960, 1381071762609, 24002339457710, 420292066661594, 7394152265405038, 130463578696387397, 2306049013760669647, 40806118077181581732 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A240000

LINKS

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

EXAMPLE

Some solutions for n=4

..0..3..3..0....0..0..3..3....0..3..3..0....0..0..3..3....0..0..0..3

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

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

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

CROSSREFS

Sequence in context: A102693 A052654 A108398 * A102244 A323313 A337593

Adjacent sequences: A239994 A239995 A239996 * A239998 A239999 A240000

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 30 2014

STATUS

approved

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Last modified March 26 23:26 EDT 2023. Contains 361553 sequences. (Running on oeis4.)