login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Number of nX6 0..3 arrays with no element equal to the sum of elements to its left or the sum of elements above it or the sum of the elements diagonally to its northwest or the sum of the elements antidiagonally to its northeast, modulo 4
0

%I #3 Apr 03 2014 07:11:30

%S 164,540,3964,33216,246458,2043488,16426440,143288058,1177286938,

%T 10394554300,87560804240

%N Number of nX6 0..3 arrays with no element equal to the sum of elements to its left or the sum of elements above it or the sum of the elements diagonally to its northwest or the sum of the elements antidiagonally to its northeast, modulo 4

%C Column 6 of A240250

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 03 2014