cp's OEIS Frontend

A188324 Number of nondecreasing arrangements of n nonzero numbers in -(2n-2)..(2n-2) with sum zero.

%I A188324 #8 Jul 22 2025 11:07:25
%S A188324 0,2,8,61,472,4050,36454,341988,3306612,32757830,330964946,3398830478,
%T A188324 35386215292,372754193214,3966423984516,42579631811396,
%U A188324 460648926971334,5017891492413126,54996459314116816,606092251444553993
%N A188324 Number of nondecreasing arrangements of n nonzero numbers in -(2n-2)..(2n-2) with sum zero.
%C A188324 Diagonal of A188333
%H A188324 R. H. Hardin, <a href="/A188324/b188324.txt">Table of n, a(n) for n = 1..24</a>
%e A188324 Some solutions for n=6
%e A188324 .-9...-8...-8...-6...-9...-7..-10..-10..-10...-8...-8...-8...-9...-7...-6...-7
%e A188324 .-1...-1...-6...-2...-5...-7...-7...-2...-2...-7...-7...-4...-6...-7...-5...-6
%e A188324 .-1...-1...-3...-1...-4...-3....1...-2...-2...-2....1...-4...-2...-2...-2....1
%e A188324 ..1...-1....4....3....1....5....3...-2....2...-1....2...-4...-2....2...-1....3
%e A188324 ..5....2....5....3....8....5....4....8....3....9....3...10....9....6....6....3
%e A188324 ..5....9....8....3....9....7....9....8....9....9....9...10...10....8....8....6
%K A188324 nonn
%O A188324 1,2
%A A188324 _R. H. Hardin_ Mar 28 2011