

A240367


Number of 4Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4


1



11, 111, 1181, 13846, 165110, 2057843, 25667276, 329976721, 4209948942, 54835868848, 706915105152, 9251489612408, 119830890364458, 1570263366115713, 20386274517258734, 267147847200802821, 3472830684721624629
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OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

Some solutions for n=4
..0..0..0..0....0..0..0..3....0..3..1..0....0..3..3..1....3..1..0..0
..3..1..3..3....0..3..1..0....3..3..0..0....0..0..0..0....0..0..0..0
..0..2..2..2....0..0..0..2....0..3..2..0....0..0..0..0....0..0..3..1
..0..0..2..2....0..0..0..2....3..1..2..0....3..3..0..0....0..0..3..2


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



