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%I #6 Mar 12 2017 23:58:47
%S 1,8,56,563,6006,68723,817594,10030238,125899533,1609360719,
%T 20877938573,274173012896
%N Number of n-bead necklaces labeled with numbers -7..7 not allowing reversal, with sum zero and avoiding the pattern z z+1 z+2.
%C Column 7 of A209073.
%e Some solutions for n=6:
%e .-7...-5...-7...-7...-7...-6...-7...-6...-5...-7...-5...-7...-6...-6...-6...-5
%e .-6....0....4....4...-6....3...-2....5....0....3...-3...-4....7...-2....5....5
%e ..1...-4....6....2....4....6....3....5....4....2....6....2...-5....1...-4...-3
%e ..1....3...-4....0....7....2....4....0....2....0....2....6....2....4....1....5
%e ..4...-1...-2...-3....4...-4....0...-1...-3....1....1....5....4....5....3....0
%e ..7....7....3....4...-2...-1....2...-3....2....1...-1...-2...-2...-2....1...-2
%K nonn
%O 1,2
%A _R. H. Hardin_, Mar 04 2012
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