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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 0

%I #5 Dec 18 2015 18:18:50

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

%N 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

%C Diagonal of A239858

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 28 2014

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Last modified March 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)