43504domain: NAppears in sequencesNumbers k such that 117*2^k+1 is prime.at n=22A032408a(n) = Sum_{k=1..n} -A068341(k+1)*a(n-k), a(0)=1.at n=16A073777Number of -n..n arrays x(0..3) of 4 elements with zero sum and no two neighbors equal.at n=19A199706Number of (undirected) paths in the n-web graph.at n=5A288037