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A266454 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no element 1 greater than its north neighbor modulo n and the upper left element equal to 0. 0

%I

%S 1,3,357,442285,1548940233,12959331192279,218375094825289861

%N Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no element 1 greater than its north neighbor modulo n and the upper left element equal to 0.

%C Column 4 of A266455.

%e Some solutions for n=3

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

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

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

%Y Cf. A266455.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 29 2015

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Last modified September 20 03:55 EDT 2019. Contains 327212 sequences. (Running on oeis4.)