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Number of n-bead necklaces labeled with numbers -5..5 not allowing reversal, with sum zero and three times sum of squares <= n*(5)*(5+1).
0

%I #6 Mar 12 2017 23:13:31

%S 1,4,19,141,1093,8924,77053,692566,6345907,59150386,562643309,

%T 5397588986,52466338007

%N Number of n-bead necklaces labeled with numbers -5..5 not allowing reversal, with sum zero and three times sum of squares <= n*(5)*(5+1).

%C Column 5 of A208814.

%e Some solutions for n=6:

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

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 01 2012