A197466 Number of one-sided poly-[4.8^2]-tiles (holes allowed) with n cells (division into triangles is significant).

1, 2, 3, 8, 14, 36, 80, 206, 494, 1259, 3144, 8085, 20676, 53635, 139144, 363630, 952148, 2504626, 6603367, 17463287

Offset: 1

Author

Joseph Myers, Oct 15 2011

Keywords

• hard
• nonn

References

• Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Sections 2.7, 6.2 and 9.4.

Crossrefs

Cf. A197465, A197467.