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A200170 Number of -n..n arrays x(0..6) of 7 elements with nonzero sum and with zero through 6 differences all nonzero 0

%I #4 Mar 31 2012 12:36:38

%S 2,2276,57992,631638,3687480,15586972,50917674,141509152,344941886,

%T 762917274,1552478008,2969607490,5365606152,9271467482,15395275250

%N Number of -n..n arrays x(0..6) of 7 elements with nonzero sum and with zero through 6 differences all nonzero

%C Row 7 of A200165

%e Some solutions for n=5

%e ..2....1...-4...-4....1....2...-5....1...-5....2....2....1...-4...-4....2...-4

%e ..1...-5...-5....1...-5...-4....1...-5....1...-5...-5...-4...-5....1....1...-5

%e .-4....2....2...-5....2...-5...-4....1...-5....2...-4...-5...-4....2...-5...-4

%e .-2....1...-4....4....1...-2....4...-1...-2...-1...-2....4...-2...-4...-4....5

%e .-1...-5....2...-3....3...-1...-4....4....2...-5...-4...-3...-5....4....1...-5

%e ..5....3....1....4...-5....2....5...-4....4....5....3....1...-4...-2...-1...-4

%e ..1...-5....3...-5....2...-3....2...-1...-5...-2....5....4....5....4....1....2

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 13 2011

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)