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A183934 Number of nondecreasing arrangements of n numbers in -8..8 with sum zero and sum of squares less than n*72/3 1

%I #5 Mar 31 2012 12:35:55

%S 1,5,24,110,408,1324,3931,10781,27652,66846,153536,336714,709053,

%T 1439910,2828356,5391328,10000100,18088003,31970349,55317387,93839420,

%U 156294086,255908082,412365724,654618675,1024726981,1583050748,2415379762

%N Number of nondecreasing arrangements of n numbers in -8..8 with sum zero and sum of squares less than n*72/3

%C Column 8 of A183935

%H R. H. Hardin, <a href="/A183934/b183934.txt">Table of n, a(n) for n = 1..59</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 08 2011

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Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)