110368domain: NAppears in sequencesE.g.f. satisfies: A'(x) = 1 + x*A(x)^2 where A(0) = 1.at n=9A144012Number of 5-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero and avoiding the pattern z z+1 z+2.at n=14A209074a(n) = Sum_{k=0..n} (-1)^k * (k*n-1)^(n-k) * binomial(n,k).at n=6A356817