A197157 Number of one-sided poly-[3^3.4^2]-tiles (polyhouses) (holes allowed) with n cells.

1, 4, 8, 34, 106, 430, 1616, 6594, 26588, 110188, 457964, 1925498, 8135692, 34597729, 147780810

Offset: 1

Author

Joseph Myers, Oct 10 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.

Links

• Brendan Owen, Polyhouses (gives a(1)-a(10)).

Crossrefs

Cf. A197156, A197158.