24931542797domain: NAppears in sequencesNumber of chiral pairs of polyominoes with n heptagonal cells of the hyperbolic regular tiling with Schläfli symbol {7,oo}.at n=9A389562Number of chiral pairs of asymmetric polyominoes with n heptagonal cells of the hyperbolic regular tiling with Schläfli symbol {7,oo}.at n=9A389564