

A291809


Number of tilings of n X n square using differently sized polyominoes.


6




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 by polyominoes of all different sizes. 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, Tiling examples


CROSSREFS

Cf. A268416 (polyominoes that will fit in nsided square), A291806 (polyomino tilings of square), A291807 (symmetric tilings), A291808 (tilings with distinct polyominoes).
Sequence in context: A322514 A132100 A327129 * A182070 A325630 A292702
Adjacent sequences: A291806 A291807 A291808 * A291810 A291811 A291812


KEYWORD

nonn,more


AUTHOR

John Mason, Sep 01 2017


STATUS

approved



