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A250326 Number of length 7+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero 0

%I

%S 212,5849,61092,363457,1559080,5237161,14866258,37065983,83449226,

%T 172987415

%N Number of length 7+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero

%C Row 7 of A250320

%e Some solutions for n=3

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

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

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 18 2014

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Last modified August 5 17:20 EDT 2021. Contains 346488 sequences. (Running on oeis4.)