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A183916 Number of nondecreasing arrangements of n numbers in -8..8 with sum zero 2

%I

%S 1,9,41,177,649,2137,6375,17575,45207,109583,252117,553981,1168261,

%T 2374753,4669367,8908546,16535154,29927526,52925886,91617530,

%U 155484150,259062316,424306230,683919048,1085984406,1700352360,2627337510

%N Number of nondecreasing arrangements of n numbers in -8..8 with sum zero

%C Column 8 of A183917

%H R. H. Hardin, <a href="/A183916/b183916.txt">Table of n, a(n) for n = 1..63</a>

%e Some solutions for n=4

%e .-6...-7...-7...-3...-7...-7...-4...-4...-4...-1...-2...-8...-6...-4...-5...-8

%e .-3...-5....2...-1....0....1...-2....1...-3...-1...-2...-1....1....0...-1....1

%e ..4....4....2....0....0....1....0....1....3....0....1....4....2....1....1....3

%e ..5....8....3....4....7....5....6....2....4....2....3....5....3....3....5....4

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 07 2011

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Last modified February 3 04:55 EST 2023. Contains 360024 sequences. (Running on oeis4.)