1063216domain: NAppears in sequencesE.g.f.: 1 / (1 - x * exp(2*x)).at n=7A336950Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = n! * Sum_{j=0..n} (k * (n-j))^j/j!.at n=52A351790Number of total dominating sets in the n-double cone graph.at n=9A362750