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A187995 Number of nondecreasing arrangements of n numbers x(i) in -n..n with the sum of sign(x(i))*x(i)^2 zero 0

%I

%S 1,3,4,17,45,176,644,2983,13675,67487,340192,1775300,9438436,51112686,

%T 281006680,1565898705,8826775421

%N Number of nondecreasing arrangements of n numbers x(i) in -n..n with the sum of sign(x(i))*x(i)^2 zero

%C Column 2 of A188002

%e All solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 18 2011

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Last modified November 28 22:15 EST 2021. Contains 349415 sequences. (Running on oeis4.)