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A266864 Number of 5Xn arrays containing n copies of 0..5-1 with no element 1 greater than its north or southwest neighbor modulo 5 and the upper left element equal to 0. 0

%I

%S 9,1281,328701,104767812,37478933496,14445711101455,5872334060687409,

%T 2483169766664902279,1082314714218076313666

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

%C Row 5 of A266861.

%e Some solutions for n=2

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

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

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

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

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

%Y Cf. A266861.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 04 2016

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Last modified November 29 11:26 EST 2020. Contains 338765 sequences. (Running on oeis4.)