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A241355 Number of nX7 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of 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 0

%I

%S 20,103,641,5663,32942,247664,1904754,12340892,104529676,729080777,

%T 5436001228,44321599723

%N Number of nX7 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of 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

%C Column 7 of A241356

%e Some solutions for n=3

%e ..2..3..3..3..2..3..3....2..3..3..2..3..3..2....3..2..3..3..2..3..3

%e ..2..1..1..1..2..2..2....2..1..1..2..1..1..1....3..1..2..1..2..2..1

%e ..3..2..2..0..0..1..3....3..2..3..2..0..3..3....2..3..0..2..0..0..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 20 2014

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Last modified September 22 06:53 EDT 2020. Contains 337289 sequences. (Running on oeis4.)