71094domain: NAppears in sequencesNumber of unlabeled hexagonal 2-trees with n hexagons.at n=8A094637Position of 5^n in A051037 (5-smooth numbers).at n=49A188427Number of Sommerville symmetrical cyclic compositions (on symmetric necklaces) of n that are Carlitz (adjacent parts on the circle are distinct).at n=40A292200