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A239850 Number of n X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4 0
2, 3, 44, 203, 4549, 176208, 9885999, 14757679494 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A239858

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

..3..2..3..3....2..3..3..2....2..3..3..2....2..3..3..2....2..3..3..2

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

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

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

CROSSREFS

Sequence in context: A218002 A255969 A329945 * A100443 A334243 A323619

Adjacent sequences:  A239847 A239848 A239849 * A239851 A239852 A239853

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 28 2014

STATUS

approved

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Last modified August 14 13:55 EDT 2020. Contains 336481 sequences. (Running on oeis4.)