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A183291 Number of nXnXnXn triangular pyramidal binary arrays with the number of 0-0 adjacencies equal to the number of 0-1 adjacencies 0

%I

%S 2,5,75,29721,331189203

%N Number of nXnXnXn triangular pyramidal binary arrays with the number of 0-0 adjacencies equal to the number of 0-1 adjacencies

%e Some solutions for 3X3X3X3

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

%e ...

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

%e ...0.1....0.0....0.0....0.1....0.0....0.0....0.0....0.0....0.1....0.0....0.0

%e ...

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

%e ...0.1....0.1....1.0....0.0....0.0....0.0....0.0....0.0....0.0....1.1....1.0

%e ..0.0.0..0.0.0..1.0.1..1.1.0..0.1.0..1.0.1..1.1.1..1.0.1..0.1.0..0.0.1..0.0.1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 03 2011

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Last modified October 22 13:49 EDT 2021. Contains 348170 sequences. (Running on oeis4.)