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%I #6 May 10 2023 03:56:07
%S 1,4,5,25,64,286,1055,5191,24135,122238,626982,3324754,17890884,
%T 98093994,544680909,3062711643,17400096265,99802843644,577238731571,
%U 3364142278629,19740895907880,116567717909224,692260264168512,4132754144726272,24791787193993220
%N Number of nondecreasing arrangements of n numbers x(i) in -(n+1)..(n+1) with the sum of sign(x(i))*x(i)^2 zero
%C Column 3 of A188002
%e Some solutions for n=4
%e .-4...-2...-5...-5...-1...-2...-3...-4...-3...-4...-2...-5...-2...-3...-3...-4
%e .-4...-2...-3...-1...-1...-1...-1...-3....1...-1....0....0...-2....0...-3....0
%e ..4....2....3....1....1....1....1....0....2....1....0....3...-1....0....3....0
%e ..4....2....5....5....1....2....3....5....2....4....2....4....3....3....3....4
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 18 2011
%E Terms from a(18) on from _R. J. Mathar_, May 10 2023
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