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A223638 Number of n X n 0..1 arrays with rows, columns, diagonals and antidiagonals unimodal 0

%I

%S 2,16,218,2962,36947,428187,4682514,49045356,497721760,4944054774

%N Number of n X n 0..1 arrays with rows, columns, diagonals and antidiagonals unimodal

%C Diagonal of A223644

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 24 2013

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Last modified January 20 06:12 EST 2022. Contains 350467 sequences. (Running on oeis4.)