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

1,1

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

Table of n, a(n) for n=1..17.

Brendan Owen, Polyhouses.

Crossrefs

Cf. A197156, A197157.

Sequence in context: A180678 A072110 A323229 * A188314 A114296 A378382

Adjacent sequences: A197155 A197156 A197157 * A197159 A197160 A197161

Keyword

nonn,hard,more

Author

Joseph Myers, Oct 10 2011

Extensions

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

Status

approved