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Number of 5Xn arrays containing n copies of 0..5-1 with no element 1 greater than its north, southwest or northwest neighbor modulo 5 and the upper left element equal to 0.
0

%I #5 Aug 12 2016 06:53:59

%S 9,351,33529,4555903,763867475,138332628493,25681615835531,

%T 4850980527140722

%N Number of 5Xn arrays containing n copies of 0..5-1 with no element 1 greater than its north, southwest or northwest neighbor modulo 5 and the upper left element equal to 0.

%C Row 5 of A266878.

%e Some solutions for n=3

%e ..0..1..2....0..1..3....0..1..4....0..3..3....0..2..2....0..0..1....0..1..0

%e ..2..4..0....2..4..1....4..4..1....3..0..2....4..4..0....2..3..4....3..3..4

%e ..4..1..3....0..4..1....1..3..3....0..2..2....4..1..3....1..1..2....1..2..2

%e ..2..1..3....0..3..4....0..0..2....4..4..1....2..3..3....4..0..4....4..0..1

%e ..4..0..3....3..2..2....3..2..2....1..4..1....0..1..1....3..2..3....2..3..4

%Y Cf. A266878.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 05 2016