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A266870 Number of 5Xn arrays containing n copies of 0..5-1 with no element 1 greater than its west or northeast neighbor modulo 5 and the upper left element equal to 0. 0

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

%S 24,2760,530368,132028418,37478933496,11567328302147,3781726242152832,

%T 1289651736397187033

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

%C Row 5 of A266867.

%e Some solutions for n=2

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

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

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

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

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

%Y Cf. A266867.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 04 2016

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Last modified August 11 00:59 EDT 2024. Contains 375059 sequences. (Running on oeis4.)