

A291808


Number of tilings of an n X n square using distinct polyominoes.


4




OFFSET

1,2


COMMENTS

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


LINKS

Table of n, a(n) for n=1..4.
John Mason, Example tilings


CROSSREFS

Cf. A268416 (polyominoes that will fit in nsided square), A291806 (polyomino tilings of square), A291807 (symmetric tilings), A291809 (tilings with differently sized polyominoes).
Sequence in context: A054914 A329021 A275307 * A161745 A048566 A321058
Adjacent sequences: A291805 A291806 A291807 * A291809 A291810 A291811


KEYWORD

nonn,more


AUTHOR

John Mason, Sep 01 2017


STATUS

approved



