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A183924 Number of nondecreasing arrangements of n numbers in -6..6 with sum zero and sum of squares not greater than n*42/3 1

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

%S 1,4,17,58,163,434,1061,2414,5166,10526,20487,38395,69532,121942,

%T 207964,346094,562655,895871,1399654,2148160,3243905,4825785,7078462,

%U 10248911,14660878,20733091,29009482,40186573,55143962,74997918,101147802

%N Number of nondecreasing arrangements of n numbers in -6..6 with sum zero and sum of squares not greater than n*42/3

%C Column 6 of A183927

%H R. H. Hardin, <a href="/A183924/b183924.txt">Table of n, a(n) for n = 1..71</a>

%e Some solutions for n=4

%e .-4...-2...-4...-4...-4...-2...-3...-3...-3...-1...-5...-5...-4...-3....0...-2

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

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

%e ..4....2....6....5....3....6....3....3....4....1....4....5....2....5....0....4

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 08 2011

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Last modified July 14 03:51 EDT 2024. Contains 374291 sequences. (Running on oeis4.)