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A200160 Number of -3..3 arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero.

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%I A200160 #6 Jul 22 2025 15:42:32
%S A200160 6,24,128,576,2778,12440,57992,262444,1202540,5463896,24922570,
%T A200160 113239064,515471532,2342330752,10649798938
%N A200160 Number of -3..3 arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero.
%C A200160 Column 3 of A200165
%e A200160 Some solutions for n=5
%e A200160 .-1...-1....2....2....2....1...-3....3....3...-3...-1....3....1...-1...-1....3
%e A200160 ..2....1...-2...-1....3....3....2...-2...-2....3...-2...-2...-3...-3....2....1
%e A200160 .-3...-2...-1....2....1....2...-3...-1...-1....1....1....2....1....1...-1....3
%e A200160 ..1...-1....1....3...-2...-3...-1....1....1...-3...-2....3...-2...-1...-2...-1
%e A200160 .-2...-2...-2...-1....1....1...-2...-2...-3...-1....3....2...-1....2....3....1
%K A200160 nonn
%O A200160 1,1
%A A200160 _R. H. Hardin_ Nov 13 2011

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