A197158 Number of fixed poly-[3^3.4^2]-tiles (polyhouses) (holes allowed) with n cells.

2, 5, 16, 57, 212, 817, 3232, 13018, 53176, 219680, 915928, 3848079, 16271384, 69183099, 295561620, 1267964967, 5459626526

Offset: 1

Author

Joseph Myers, Oct 10 2011

Keywords

• nonn
• hard
• more

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.

Crossrefs

Cf. A197156, A197157.

Extensions

a(16)-a(17) from Johann Peters, Nov 22 2024