A390193 Number of achiral polyominoes in {4,5} tessellation of the hyperbolic plane.

1, 1, 2, 3, 7, 11, 29, 47, 128, 214, 594, 1019, 2861, 5003, 14173, 25149, 71758, 128787, 369671, 669535

Offset

1,3

Links

Table of n, a(n) for n=1..20.

Crossrefs

Cf. A119611, A390191, A390192, A390194.

Sequence in context: A014981 A227885 A096362 * A005479 A120856 A138000

Adjacent sequences: A390190 A390191 A390192 * A390194 A390195 A390196

Keyword

nonn,more

Author

John Mason, Érika Roldán and Rosemberg Toalá-Enríquez, Oct 30 2025

Status

approved