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A267394 Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or northeast neighbors modulo n and the upper left element equal to 0. 0

%I #3 Jan 13 2016 20:10:07

%S 1,35,33,127,626,4189,38879,501695,9072793

%N Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or northeast neighbors modulo n and the upper left element equal to 0.

%C Superdiagonal 2 of A267392.

%e Some solutions for n=4

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

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

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

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

%Y Cf. A267392.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 13 2016

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Last modified September 15 03:44 EDT 2024. Contains 375931 sequences. (Running on oeis4.)