A291807 The number of symmetric polyomino tilings of n X n square.

1, 5, 67, 3000

Offset: 1

Author

John Mason, Sep 01 2017

Keywords

• nonn
• more

Comments

The sequence gives the number of distinct tilings by polyominoes of a square with side n, considering tilings that have at least one symmetry. As for "free" polyominoes, tilings that are reflections or rotations of each other are not considered distinct.

Links

• John Mason, Example symmetric tilings

Crossrefs

Cf. A268416 (polyominoes that will fit in n-sided square), A291806 (polyomino tilings of square), A291808 (tilings with distinct polyominoes), A291809 (tilings with differently sized polyominoes).