1716033domain: NAppears in sequencesNumber of fixed hexagonal polyominoes with n cells.at n=10A001207Number of free poly-IH4-tiles (holes allowed) with n cells.at n=10A197958Number of free poly-IH5-tiles (holes allowed) with n cells.at n=10A212086Number of free poly-IH7-tiles (holes allowed) with n cells.at n=10A212416