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Number of 5Xn arrays containing n copies of 0..5-1 with every element equal to or 1 greater than any west, northeast or northwest neighbors modulo 5 and the upper left element equal to 0.
0

%I #5 Aug 12 2016 06:54:01

%S 24,1,1,1,1,1,1,1,1,9,65,624,5309,38578,239701,1309340,6447890,

%T 29143104,122531502,484952549,1822769330,6559659490,22756224972,

%U 76595595448,251727333628,813474158085,2607267986103

%N Number of 5Xn arrays containing n copies of 0..5-1 with every element equal to or 1 greater than any west, northeast or northwest neighbors modulo 5 and the upper left element equal to 0.

%C Row 5 of A267425.

%e Some solutions for n=11

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

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

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

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

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

%Y Cf. A267425.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 14 2016