A241350 - OEIS

A241350

Number of n X n 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 or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

2, 3, 19, 128, 615, 35880, 1904754, 109041097

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OFFSET

1,1

COMMENTS

Diagonal of A241356

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

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

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

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

CROSSREFS

Sequence in context: A119344 A072877 A201378 * A032329 A219285 A066227

Adjacent sequences: A241347 A241348 A241349 * A241351 A241352 A241353

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 20 2014

STATUS

approved