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A241277 Number of n X n 0..3 arrays with no element equal to one 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, 41, 773, 20717, 15616828, 2949336562 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A241283

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A094714 A200817 A042475 * A123993 A271331 A101821

Adjacent sequences:  A241274 A241275 A241276 * A241278 A241279 A241280

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 18 2014

STATUS

approved

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Last modified June 4 01:24 EDT 2020. Contains 334808 sequences. (Running on oeis4.)