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%I A208804 #11 Mar 13 2017 00:23:03
%S A208804 1,5,22,201,1827,21227,243678,2951235,37509753,473996108,6076893848,
%T A208804 80987915371,1065626336007,14153929259801,193667696486438,
%U A208804 2610764121932745,35428434842511617,493224952143247713,6763266087728449466,93152055287986212052
%N A208804 Number of n-bead necklaces labeled with numbers -7..7 allowing reversal, with sum zero and three times sum of squares <= n*(7)*(7+1).
%H A208804 Andrew Howroyd, <a href="/A208804/b208804.txt">Table of n, a(n) for n = 1..40</a>
%e A208804 Some solutions for n=6:
%e A208804 .-4...-5...-5...-5...-6...-7...-3...-5...-3...-5...-4...-5...-5...-5...-5...-3
%e A208804 .-1...-3....0....1...-2....3...-2...-3...-3...-3...-3....0...-2...-2....1...-2
%e A208804 .-3...-3...-2...-4....4...-3....0....2...-2....1...-3...-5....1...-3...-4....0
%e A208804 ..7....2....6....0...-3....0...-3...-4....5....7....4....4...-4....5....5....5
%e A208804 ..1....3....1....4....2....4....3....6...-1...-3....4....2....6....3....0...-1
%e A208804 ..0....6....0....4....5....3....5....4....4....3....2....4....4....2....3....1
%Y A208804 Column 7 of A208805.
%K A208804 nonn
%O A208804 1,2
%A A208804 _R. H. Hardin_, Mar 01 2012
%E A208804 a(12)-a(20) from _Andrew Howroyd_, Mar 02 2017

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