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A183925 Number of nondecreasing arrangements of n numbers in -7..7 with sum zero and sum of squares not greater than n*56/3 1

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

%S 1,5,22,83,262,794,2117,5278,12584,27893,58831,120973,235504,443653,

%T 821738,1459822,2529977,4337998,7192569,11698167,18893169,29678739,

%U 45907880,70687245,106315189,157902365,233830545,339336920,487306673

%N Number of nondecreasing arrangements of n numbers in -7..7 with sum zero and sum of squares not greater than n*56/3

%C Column 7 of A183927

%H R. H. Hardin, <a href="/A183925/b183925.txt">Table of n, a(n) for n = 1..63</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 08 2011

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