A239850 - OEIS

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

2, 3, 44, 203, 4549, 176208, 9885999, 14757679494

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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: A356565 A255969 A329945 * A354613 A375687 A355842

Adjacent sequences: A239847 A239848 A239849 * A239851 A239852 A239853

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 28 2014

STATUS

approved